It is a special shape of metal plates with a certain thickness of aluminum, iron, steel, stainless steel, etc. made by punching, bending, bulging and other molds under the action of a punch press. Its main process is stamping, and the material is metal, hence the name metal stamping parts. It can be seen everywhere in our environment. Metal stamping parts are used as parts in cars, bicycles, metal doors, metal brackets, washing machines, and point sockets. And a high-quality part needs to be strictly produced. Therefore, it is particularly important to choose a high-quality manufacturer. Below is our detailed introduction to materials, molds, processes, and supplier selection.
The materials of metal stamping parts used in daily life and ordinary processes are mainly aluminum, steel, copper, and stainless steel. In precision manufacturing, aerospace, stamping parts made of rare or precious metals such as gold, silver, and titanium are also used.
Because we serve the general manufacturing industry, we only introduce three metals here: stainless steel, steel, and aluminum.
Tensile strength is the basic element for calculating stamping processing force. The so-called tensile strength is the maximum load value during the actual tensile test divided by the cross-sectional area of the test piece at the beginning.
That is: sb = PMAX / A (kg/mm2)
When the yield strength and tensile strength are high, the stamping forming force is large, the difficulty of forming increases, and the life of the mold is also reduced. If the yield strength is high, after the stamping forming is completed, when the stamping part is detached from the mold and unloaded, the elastic recovery deformation is also large, affecting the dimensional accuracy of the stamping part.
In general calculations, the shear stress of stamping materials t = 0.8 * tensile strength sb
Note: 1 Pa = 1 N/m2 = 1x10-6 N/mm2 = 1.01972x10-7 Kg/mm2
δ = (L1-L) / L
In the material tensile test, after the specimen is broken, due to the retention of plastic deformation, the specimen length changes from the original L to L1, and the ratio expressed as a percentage is called the elongation. The uniform elongation dU is the elongation when local necking occurs during unidirectional stretching, that is, when the stretching process becomes unstable. If the elongation of the sheet is large, it is beneficial to all elongation stamping. When the elongation is large, the forming limit of bulging and flanging is also large. Therefore, most high-quality stamping steels have a high uniform elongation.
Stainless steel plate stretch forming requires several processes to achieve the product shape. During the stretching process, the material will harden, which is generally called work hardening. The reason for work hardening is that after the material undergoes a plastic deformation, the load applied in the same direction will increase its yield point, thereby increasing the necessary deformation resistance to resist the recurrence of plastic deformation. The yield point is the initial point beyond the elastic deformation area and the permanent deformation occurs. From the tensile test, it is known that it is the point where the load does not increase and the stretching behavior continues. What does the high or low work hardening coefficient mean? Materials with high n values will have the following behaviors:
(1) Continuing processing will cause the material to harden and the elongation to decrease, making processing difficult.
(2) Continuing processing will suppress local deformation and obtain uniform deformation. Materials with low n values will have the following behaviors: Continuing processing will cause local deformation, and the weak part may even break. Therefore, elongation forming requires the plate to have a larger n value.
It is a parameter that represents the anisotropic properties of the plate. Since the sheet metal undergoes rolling and annealing processes during the manufacturing process, the sheet metal forms a texture structure with a consistent crystal orientation, which is anisotropic in the macroscopic sense, that is, the performance of the sheet metal in different directions is different. In production, the r value is used to represent the anisotropy of the sheet metal, and its value is equal to the ratio of the width strain b represented by the logarithmic strain to the thickness direction strain t,
that is: r=eb/et=ln(b/b0)/ln(t/t0)
The r value mainly affects the drawing performance. The larger the r value of the sheet metal, the better its drawing performance.
Generally speaking, the lower the hardness, the better the plasticity. However, if the hardness of the material is high and the carbide spheroidization rate is above 90%, a good blanking surface can be obtained. On the contrary, if the hardness of the material is low but the spheroidization is insufficient, the blanking surface will also be torn. Therefore, hardness is a macroscopic indicator for judging whether it is suitable for shearing, while metal structure (uniformity and degree of spheroidization of carbides) is a microscopic indicator for judging whether it is suitable for blanking.
The structure of low carbon steel is composed of soft ferrite as the matrix and a small amount of pearlite. Pearlite is a fine mixture of ferrite and cementite, of which cementite accounts for 12%. Ferrite has good plasticity, while cementite is hard and brittle. From the perspective of materials with the same carbon content, the plasticity can be improved and the quality of the blanking surface can be improved by spheroidizing carbides. Note: What is spheroidizing annealing? The purpose is to spheroidize the network secondary cementite and the layered cementite in the pearlite into granular cementite, reduce the hardness of the material, improve the machinability, and prepare for quenching. Because pearlite itself is hard, and because of the presence of network secondary cementite, the hardness and brittleness of the steel are increased. This not only brings difficulties to cutting, but also causes deformation and cracking during quenching.
When deep drawing certain plates (such as stainless steel plates and brass plates, etc.) is performed, due to the residual stress formed during deep drawing, longitudinal cracking will occur on the side wall of the cylindrical part after deep drawing. This cracking phenomenon may occur immediately after demolding, or it may occur after being placed for a period of time, or during the use of the stamping part, so it is called aging cracking.
The cylinder deep extension test method is one of the most basic methods for evaluating the deep extension of metal sheets. The purpose of this test is to obtain the limit drawing ratio (Limit Drawing Ratio, referred to as LDR) of the metal material. The larger the LDR value, the better the extension of the material. LDR = D/dp, where: D represents the billet diameter, and dp represents the punch (drawing product) diameter. The LDR value is positively correlated with the plastic strain ratio r value, that is, the material with a large r value has better deep extension.
The cone dish test is one of the most basic methods for evaluating the formability of metal sheets (thickness 0.5-1.6mm). The CCV value can be used as an evaluation test for the combined formability of deep extension and stretching, and it is closely related to the work hardening value and plastic strain ratio.
Aluminum alloy is one of the commonly used materials for stamping parts. Aluminum alloy stamping materials are mainly divided into two forms: plates and strips. They are usually composed of about ten major alloying elements, the concentration of which ranges from 0.1% to several mass percent, and the properties of pure aluminum can be adjusted according to user needs. According to the composition of alloying elements, aluminum alloys can be divided into six groups of deformed aluminum alloys. In order to select and specify aluminum alloys with specific properties for specific applications, their composition and tempering state must be clarified.
The grades of deformed aluminum alloys are usually expressed in four digits according to international ISO standards, and these digits are used to identify alloying elements. When the aluminum content is not less than 99.00%, we call it pure aluminum, and its grade is expressed in the form of 1×××, and the last two digits represent the minimum aluminum percentage. When the minimum aluminum percentage is accurate to 0.01%, the last two digits of the grade represent the two digits after the decimal point in the minimum percentage. The grades of aluminum alloys range from 2××× to 8××× series, and the last two digits have no special meaning and are only used to distinguish different aluminum alloys in the same group. If the second letter is A, it indicates the original grade; if it is any other letter, it indicates the modification. There are specific requirements for the chemical composition between the modified alloy and the original alloy. For details, please refer to GB/T 16474-1996 standard, which will not be described in detail here.
The six groups of deformed aluminum alloys are divided into two categories: heat-treatable and non-heat-treatable. Heat-treatable alloys can be strengthened by appropriate heat treatment. The basic strength of non-heat-treatable alloys depends on the alloy content and can be significantly improved by work hardening (strain hardening) and in some cases by grain size refinement.
Work hardening means that as the degree of cold deformation increases, the strength and hardness of the metal material are improved, but the plasticity and toughness decrease.
Heat-treatable Alloys
Heat-treatable alloys ("T" tempering) obtain the best mechanical properties through a heat treatment process. Common heat treatments include solution heat treatment (usually the state is represented by "W") and artificial aging.
Solution heat treatment is a heat treatment process in which the alloy is heated to a high temperature (about 530°C) and maintained at a constant temperature to fully dissolve the alloying elements or compounds into the solid solution, and then rapidly cooled to obtain a supersaturated solid solution. Quenching is usually performed in water to produce a supersaturated solution at room temperature.
Solution heat treatment is usually followed by aging. Aging refers to the precipitation of some elements or compounds from the supersaturated solution to produce the desired properties. The aging process is divided into two types: natural aging at room temperature and artificial aging at high temperature.
Artificial aging temperature is usually about 160°C. Many heat-treatable aluminum alloys can be welded in their solution heat treatment and artificial aging conditions. For example: 6061-T6, 6063-T4.
Non-heat-treatable Alloys
Non-heat-treatable alloys ("H" temper) obtain the best mechanical properties through work hardening (strain hardening). Work hardening is a method of increasing strength by applying cold working. The temper designation is an extension of the alloy numbering system and consists of a series of letters and numbers after the alloy identification number, connected by a hyphen. For example: 5052-H32.
In the JIS series of grades, ordinary structural steel mainly consists of three parts:
The first part indicates the material, such as: S (Steel) for steel, F (Ferrum) for iron;
The second part indicates different shapes, types, and uses, such as: P (Plate) for plate, T (Tube) for tube, K (Kogu) for tool;
The third part indicates the characteristic number, which is generally the minimum tensile strength.
For example: SS400-the first S stands for steel (Steel), the second S stands for "Structure" (Structure), 400 is the lower limit tensile strength of 400MPa, and the whole indicates ordinary structural steel with a tensile strength of 400MPa.
SPHC-the first S is the abbreviation of Steel, P is the abbreviation of Plate, H is the abbreviation of Heat, and C is the abbreviation of Commercial. The whole indicates general hot-rolled steel plates and strips.
SPHD-indicates hot-rolled steel plates and strips for stamping.
SPHE——indicates hot-rolled steel sheets and strips for deep drawing.
SPCC——indicates cold-rolled carbon steel sheets and strips for general use, equivalent to China's Q195-215A grade. The third letter C is the abbreviation of Cold. When the tensile test needs to be guaranteed, add T at the end of the grade to SPCCT.
SPCD——indicates cold-rolled carbon steel sheets and strips for stamping, equivalent to China's 08AL (13237) high-quality carbon structural steel.
SPCE——indicates cold-rolled carbon steel sheets and strips for deep drawing, equivalent to China's 08AL (5213) deep drawing steel. When non-timeliness needs to be guaranteed, add N at the end of the grade to SPCEN.
Tempering code for cold-rolled carbon steel sheets and strips: annealing state is A, standard tempering is S, 1/8 hard is 8, 1/4 hard is 4, 1/2 hard is 2, and hard is 1.
Surface processing code: matte finishing is D, bright finishing is B. For example, SPCC-SD indicates a general cold-rolled carbon sheet with standard quenching and tempering and matte finishing. Another example is SPCCT-SB, which indicates a cold-rolled carbon sheet with standard quenching and tempering and bright processing, and requires guaranteed mechanical properties.
The JIS mechanical structure steel grade is represented by: S+carbon content+letter code (C, CK), where the carbon content is represented by the middle value × 100, and the letter C: represents carbon K: represents carburizing steel. For example, the carbon content of carbon coil S20C is 0.18-0.23%.
304 stainless steel is a commonly used material with good corrosion resistance, processability and heat treatment properties. It is widely used in household appliances, building decoration, chemical industry and food processing. The price of 304 stainless steel is relatively high, but its advantages can make up for this defect well.
316 stainless steel is better than 304 stainless steel in terms of corrosion resistance. It is suitable for processing in high temperature, high pressure and high corrosion environment. The price of 316 stainless steel is higher than that of 304 stainless steel, but its performance is also superior.
430 stainless steel is a low-cost stainless steel material with good corrosion resistance and processability. It is widely used in household appliances, kitchen utensils and other fields. The price of 430 stainless steel is lower than that of 304 and 316 stainless steel.
201 stainless steel is a low-cost stainless steel material suitable for the production of some medium and low-end products. Its corrosion resistance and mechanical properties are poor, but its price is much cheaper than other stainless steel materials.
| Material Name | Grade | Material Status | Shear Strength | Tension Strength | Yield Point | Extensibility | Elastic Modulus |
| MPa | MPa | MPa | MPa | % | Gpa | ||
| Stainless Steel | 1Cr13 | Annealed | 314~373 | 392~416 | 412 | 21 | 206 |
| 2Cr13 | 314~392 | 392~490 | 441 | 20 | 206 | ||
| 1Cr18Ni9Ti | Heat-treated | 451~511 | 569~628 | 196 | 35 | 196 | |
| Al-Mn alloy | LF21 | Nealed | 69~98 | 108~142 | 49 | 19 | |
| Semi-cold Work Hardening | 98~137 | 152~196 | 127 | 13 | |||
| Duraluminum | LY12 | Annealed | 103~147 | 147~211 | 12 | 70 | |
| Hardened & Naturally Aged | 275~304 | 392~432 | 361 | 15 | 71 | ||
| Cold Work Hardening After Quenching | 275~314 | 392~451 | 333 | 10 | |||
| Pure Copper | T1,T2,T3 | Soft | 157 | 196 | 69 | 30 | 106 |
| Hard | 235 | 294 | 3 | 127 | |||
| Brass | H62 | Soft | 255 | 294 | 35 | 98 | |
| Semi-hard | 294 | 373 | 196 | 20 | |||
| Hard | 412 | 412 | 10 | ||||
| H68 | Soft | 235 | 294 | 98 | 40 | 108 | |
| Semi-hard | 275 | 343 | 25 | ||||
| Hard | 392 | 392 | 245 | 15 | 113 | ||
| Lead Brass | HPb59~1 | Soft | 294 | 343 | 142 | 25 | 91 |
| Hard | 392 | 441 | 412 | 5 | 103 | ||
| Tin-phosphor Bronze | QSn6.5~0.1 | Soft | 255 | 294 | 137 | 38 | 98 |
| Tin-Zn Bronze | QSn4~3 | Hard | 471 | 539 | 3~5 | ||
| Extra Hard | 490 | 637 | 535 | 1~2 | 122 | ||
| Ordinary Carbon Steel | Q195 | Unannealed | 225~314 | 314~392 | 195 | 28~33 | |
| Q215 | 265~333 | 333~412 | 215 | 26~31 | |||
| Q235 | 304~373 | 432~461 | 235 | 21~25 | |||
| Q255 | 333~412 | 481~511 | 255 | 19~23 | |||
| Carbon Structural Steel | 08F | Annealed | 216~304 | 275~383 | 177 | 32 | |
| 08 | 255~353 | 324~441 | 196 | 32 | 186 | ||
| 10F | 216~333 | 275~412 | 186 | 30 | |||
| 10 | 255~333 | 294~432 | 206 | 29 | 194 | ||
| 15 | 265~373 | 333~471 | 225 | 26 | 198 | ||
| 20 | 275~392 | 353~500 | 245 | 25 | 206 | ||
| 35 | 392~511 | 490~637 | 314 | 20 | 197 | ||
| 45 | 432~549 | 539~686 | 353 | 16 | 200 | ||
| 50 | 432~569 | 539~716 | 373 | 14 | 216 |
The temperature and production process of metal stamping parts can be used as a classification method for stamping. These are also the two most mainstream methods at present. The following is a detailed introduction.
Metal processing at room temperature, generally the sheet thickness is <4mm.
The advantages are no need for heating, no oxide scale, good surface quality, easy operation, and low cost.
The disadvantages are work hardening, which makes the metal lose its ability to deform further in severe cases.
Cold stamping requires the thickness of the blank to be uniform and the fluctuation range to be small, the surface to be smooth, without spots, scratches, etc.
A stamping method that heats the metal to a certain temperature range. When the sheet thickness is 8 to 10 mm or more, it needs to be heated before stamping.
1. Compared with cold stamping, hot stamping has better formability;
2. Good dimensional accuracy. The strength of cold stamping parts is only about 600M Pa, and there is obvious rebound. The strength of hot stamping parts is about 1500M Pa, and there is almost no rebound phenomenon;
3. The surface hardness, dent resistance and rigidity of parts are relatively good;
4. For automotive stamping parts, ultra-high strength body parts can be obtained, which can reduce the thickness of parts, reduce the number of body reinforcement plates, improve the collision performance of the body, and achieve effective weight reduction of the body. This also makes the use of hot forming technology in the automotive industry a trend.
1. The manufacturing cost of hot stamping parts is high, the price of hot stamping dies is high, the energy consumption is large, and laser cutting is required, so the cost is much higher than cold stamping;
2. The production and processing process is relatively slow.
It refers to the process of making the blank produce plastic deformation without breaking to obtain a stamping part of a certain shape and size.
It refers to the process of separating the blank along a certain contour line to obtain stamping parts or semi-finished products with a certain shape, size and cross-sectional quality:
The production of metal stamping parts depends on various types of molds, each designed for different process requirements. The following are common types of metal stamping parts molds:
Molds that separate materials along closed or open contours. Such as blanking dies, punching dies, cutting dies, notching dies, trimming dies, cutting dies, etc.
Molds that bend sheet blanks or other blanks along a straight line (bending line) to obtain workpieces with a certain angle and shape.
It is a mold that makes sheet blanks into open hollow parts, or further changes the shape and size of hollow parts.
A mold that obtains convex belly-shaped parts by a stamping method that causes local plastic deformation of the ingredients, thinning of the material, and increase of the surface area.
A narrowing die is a punching die that reduces the radial size of the end of a hollow blank or a tubular blank.
It is to use external force to connect or overlap the participating parts in a certain order and manner to form a whole.
The blank or semi-finished workpiece is directly copied and formed according to the shape of the convex and concave dies, and the material itself only produces local plastic deformation. Such as flaring die, undulating forming die, flanging die, shaping die, etc.
In one stroke of the press, only one stamping process is completed.
There is only one station, and in one stroke of the press, two or more stamping processes are completed at the same station at the same time.
In the direction of blank feeding, there are two or more stations, and in one stroke of the press, two or more stamping processes are completed successively at different stations.
Combining the characteristics of single-process mold and progressive mold, using the manipulator transfer system to achieve rapid transfer of products in the mold, can greatly improve the production efficiency of the product, reduce the production cost of the product, save material cost, and have stable and reliable quality.
In stamping processing, the selection of stamping die is crucial, which directly affects the precision, production efficiency and cost of the product. The following are several key points to consider when selecting stamping dies:
Mold material: Select the mold material according to the strength, hardness and ductility of the processed material. Commonly used stamping die materials include cold working die steel, cemented carbide and high-speed steel. For mass production and high-strength materials, it is recommended to select mold materials with good wear resistance and impact resistance.
Workpiece material: Understand the characteristics of the processed material (such as tensile strength, elongation, thickness, etc.) to ensure that the mold material can withstand the stress during processing without deformation or damage.
Mold structure: Select a suitable mold structure according to the shape and size of the workpiece. For workpieces with complex shapes, compound molds or multi-station molds may be required to improve processing efficiency.
Blanking gap: Reasonably set the blanking gap of the mold to reduce burrs and improve the quality of trimming. Too large a gap will cause too many burrs, while too small a gap may cause increased mold wear or workpiece breakage.
Guide mechanism: Design a precise guide mechanism to ensure accurate alignment of the upper and lower molds to avoid mold damage or product quality problems caused by poor alignment.
Surface hardness: The surface hardness of the working part of the mold should be high enough to improve wear resistance. Common surface treatment methods include quenching, carburizing, nitriding, etc.
Hardness distribution: Ensure that the hardness distribution of the mold during processing is reasonable to avoid cracking or deformation caused by too high or too low hardness.
Production batch: Select the mold type according to the production batch. For small batch production, you can choose a simple mold or a soft mold; for large batch production, you need to choose a durable hard mold.
Mold life: According to the requirements of the production task, choose a mold material and design with a long life to reduce the number of mold changes and improve production efficiency.
Mold manufacturing cost: Under the premise of meeting production needs and quality requirements, choose mold materials and design solutions with reasonable cost to control mold manufacturing costs.
Maintenance cost: Consider the maintenance and repair costs of the mold, and choose a durable and easy-to-maintain mold structure to reduce long-term production costs.
Operational safety: Choose molds with reasonable design and safe operation to prevent operators from being injured during the production process.
Replacement and adjustment: The mold should be easy to install, replace and adjust to reduce downtime in production and improve production efficiency.
Metal stamping parts are made in a variety of processes, suitable for processing different shapes, sizes and materials. Here are some common types of metal stamping processes and pictures:
Use a punch to punch along a closed contour curve, and the punched part is a part, which is used to manufacture flat parts of various shapes.
Use a punch to punch along a closed contour curve, and the remaining part is a part.
Use a punch to cut along an unclosed curve, which is mostly used to process flat parts with simple shapes.
Trim the edges of the formed parts or cut them into a certain shape.
Deformation achieved under the action of bidirectional tension, which can form parts with various spatial curved surface shapes
Protrusions or depressions of various shapes are made on the surface of the sheet blank or part by local forming methods
Deformation method to enlarge the radial size of a certain part of a hollow blank or tubular blank
Deformation method to reduce the radial size of a certain part of a hollow blank or tubular blank
A method of gradually forming a blank with a roller in a rotating state
A forming method used to improve the dimensional accuracy of formed parts or obtain a small fillet radius
Bending the sheet into various shapes along a straight line can process various complex shaped parts
Rolling the end of the sheet into a nearly closed round head to process hinge-like parts
Twisting the semi-finished product after punching to a certain angle
Making various hollow parts from the sheet blank by forming
Further processing the hollow semi-finished product after deep drawing into a part with a bottom thickness greater than the side wall thickness
1.Punching a vertical edge on a pre-punched sheet semi-finished product or an unpunched sheet
2.Forming the edge of the sheet semi-finished product into a vertical edge according to a curve or arc
Bending deformation is achieved under the combined action of tension and bending moment to obtain parts with better precision
Metal stamping parts are parts that are processed into specific shapes and sizes of metal sheets in a die through a stamping process. Due to its high precision, high strength and high production efficiency, metal stamping parts are widely used in various industries. Here are some of the main application areas:
Body structure parts: including large stamping parts such as doors, roofs, frames, bumpers, etc. These parts require high strength and good corrosion resistance.
Engine and transmission system parts: such as cylinder heads, connecting rods, gears, etc. These parts require high precision and durability.
Interior and exterior decoration parts: such as instrument panel brackets, door panels, seat frames, etc. These parts require a certain strength while requiring beauty.
Electronic component brackets: such as circuit board brackets, heat sinks, etc. These stamping parts require high precision and good electrical and thermal conductivity.
Connectors and terminals: various types of terminals, plugs and sockets used for electrical connections, etc. These parts require high conductivity and good contact performance.
Shell and frame: such as mobile phone cases, TV frames, computer cases, etc. These stamping parts not only require high precision, but also require good heat dissipation and appearance quality.
Construction hardware: such as door and window hardware, handles, hinges, etc. These stamping parts require corrosion resistance, high strength and beautiful appearance.
Household appliance parts: such as the outer shell of washing machines, the bracket of refrigerators, the mounting bracket of air conditioners, etc. These stamping parts need to have good mechanical properties and durability.
Furniture accessories: such as bed frames, table and chair brackets, drawer slides, etc. These parts require easy installation and stable structure.
Fuselage and wing structural parts: such as fuselage shells, wing frames, etc. These stamping parts require high strength, lightness and corrosion resistance.
Engine parts: such as blades, compressor shells, etc. These parts require high precision and high temperature durability.
Electronic equipment brackets: Mounting brackets and protective shells for aerospace electronic equipment, these parts need to have lightness and impact resistance.
Surgical instruments: such as scissors, pliers, needles, etc. These stamping parts require high precision, sterility and corrosion resistance.
Medical equipment shells: such as monitors, ventilator shells, etc. These parts require beautiful appearance, easy cleaning and durability.
Implant components: such as brackets, joint replacement parts, etc. These stamping parts require strict dimensional control and biocompatibility.
Electric power equipment parts: such as transformer cores, switch housings, etc., these stampings require good insulation performance and high strength.
Photovoltaic brackets: Mounting brackets for solar panels, these parts need to be corrosion-resistant, lightweight and easy to install.
Motor and generator parts: such as stators, rotors, etc., these stampings require high precision and durability.
Kitchenware: such as stainless steel pots, knives, tableware, etc., these stampings require corrosion resistance, high strength and exquisite appearance.
Sports equipment: such as bicycle frames, fitness equipment accessories, etc., these parts require lightweight, high strength and wear resistance.
Toys and tools: such as metal toy parts, hand tools, etc., these stampings require good durability and moderate cost.
Agricultural machinery: such as parts of harvesters and seeders, these stampings require wear resistance and fatigue resistance.
Railways and ships: such as carriage frames, hull accessories, etc., these stampings require corrosion resistance and high strength.
Packaging industry: such as metal cans, bottle caps, etc., these stamping parts require high precision and good sealing performance.
When judging whether a part can be produced by stamping, the following key factors need to be considered comprehensively:
Material type:
Stamping is mainly used to process metal materials such as steel, stainless steel, aluminum, copper, etc. The material should have a certain plasticity to withstand deformation during stamping without breaking.
Material thickness:
Stamping is suitable for a certain range of material thickness. Generally, thin sheet materials (0.1mm-10mm) are most suitable for stamping. Too thick materials may be difficult to achieve uniform deformation, while too thin materials are prone to breakage.
Material strength and hardness:
High-strength and high-hardness materials may require higher stamping forces and more wear-resistant dies during stamping.
Geometric complexity:
Stamping is suitable for producing flat parts, simple geometric shapes, and parts with holes, slots, and bosses. Complex three-dimensional shapes, deep-drawn parts, or shapes requiring high precision may require multi-station stamping or combined with other processes (such as deep drawing).
Dimensional tolerance:
If the parts require high dimensional accuracy and small tolerance, stamping process can usually meet the requirements, especially in mass production with consistency advantages.
Forming depth:
Stamping is suitable for shallow drawing parts, but for deep drawing or parts requiring large forming depth, it may be necessary to evaluate the ductility of the material and the feasibility of the mold design.
Mass production:
Stamping process is suitable for mass production because the initial cost of mold manufacturing is high, but the production cost of each piece is low, which is particularly suitable for long-term production to dilute the mold cost.
Small batch production:
For small batch production or customized products, the cost of stamping molds may be high, so it is necessary to evaluate whether there are more economical process alternatives, such as laser cutting, CNC processing, etc.
Mold cost:
The design and manufacturing cost of the mold is high, so before deciding to use the stamping process, it is necessary to evaluate whether the mold cost can be amortized through the production batch.
Material utilization rate:
The material utilization rate of the stamping process is high, but the processing and cost of the blanking waste need to be considered. If the material utilization rate is low, it may lead to material waste and cost increase.
Production efficiency:
Stamping is suitable for high-efficiency production and can manufacture parts quickly and in large quantities. If parts need to be produced quickly and have high precision requirements, stamping may be an ideal choice.
Deformation capacity:
The material needs to be plastically deformed during the stamping process. If the shape of the part design exceeds the deformation capacity of the material, cracking, wrinkling and other problems may occur.
Difficulty of mold design:
Parts with complex shapes, extremely small details or large deformation may increase the difficulty of mold design and manufacturing, and may require multiple processes to complete, which will affect the feasibility and cost of the process.
Surface quality requirements:
If the part has high surface quality requirements, it is necessary to consider defects such as indentations and scratches that may be generated during the stamping process. Additional surface treatment processes may be required.
Secondary processing requirements:
Consider whether the part requires subsequent processing, such as welding, heat treatment, surface treatment, etc. If the subsequent processing of the stamped parts is complex, it may affect the choice of the overall process.
Assembly requirements:
Evaluate whether the stamping forming of the part meets the assembly requirements, such as hole position, joint surface accuracy, etc. If stamping cannot meet these requirements, the design or process may need to be adjusted.
Automobile door panel:
The material is thin steel plate, the shape is relatively complex, but it can be realized by stamping die, the production batch is large, and the surface quality requirements are high, so it is suitable for stamping process.
Small electronic equipment bracket:
The material is thin aluminum plate, the shape is simple, the batch is large, the size requirements are precise, and it is suitable for stamping process.
Thick steel plate structural parts:
If the thickness exceeds 10mm and the shape is complex, stamping is difficult, and the mold cost is high, other processes such as forging or cutting may need to be considered.
When choosing a suitable metal stamping parts supplier, several factors must be considered to ensure quality, reliability, and cost-effectiveness. If you are considering HULK Metal as a supplier, here’s how they might meet these criteria:
High-Quality Standards: HULK Metal likely emphasizes strict quality control processes to ensure that each stamped part meets industry standards. This includes precision in dimensions, material consistency, and surface finish.
Certifications: Check if HULK Metal holds any relevant industry certifications, such as ISO 9001, which would be an indicator of their commitment to quality management systems.
Advanced Equipment: HULK Metal is likely equipped with state-of-the-art machinery, including high-precision stamping presses and CNC machines, which allows for the production of complex and precise metal parts.
Design Support: If they offer design assistance, HULK Metal can help optimize your product design for manufacturability, potentially reducing costs and improving product performance.
Scalability: HULK Metal's ability to handle both small and large production runs ensures flexibility, whether you need a prototype or mass production.
Lead Times: Evaluate their average lead times and production scheduling to ensure they can meet your deadlines, especially for large-scale or time-sensitive projects.
Diverse Material Handling: HULK Metal likely works with a variety of metals such as steel, aluminum, copper, and brass, offering versatility depending on your project’s material requirements.
Material Sourcing: Ensuring that they source high-quality raw materials is crucial for the final product's durability and performance.
Competitive Pricing: HULK Metal should offer competitive pricing structures, balancing cost with the quality of the metal stamping parts. Be sure to get a detailed quote that includes tooling, production, and any additional services.
Value-Added Services: They may offer additional services like assembly, packaging, and surface treatments, which can add value and reduce your overall supply chain complexity.
Industry Experience: HULK Metal's years of experience in metal stamping can provide confidence in their ability to deliver high-quality parts across various industries.
Customer Reviews and Case Studies: Look for testimonials, case studies, or reviews from other businesses that have worked with HULK Metal. Positive feedback can provide insights into their reliability and customer service.
Proximity: If HULK Metal is located near your production facilities, this could reduce shipping costs and lead times. Consider their logistics capabilities and how they manage international shipping if applicable.
Supply Chain Management: Effective supply chain management ensures that raw materials are available and that there are no delays in production.
Customer Service: HULK Metal should offer strong after-sales support, including assistance with any issues that arise, such as part defects or adjustments to the production process.
Warranty and Repairs: Check if they provide warranties on their parts and how they handle repair or replacement services if needed.
Our metal stamping services cover a broad range of processes essential to creating precision parts. These include blanking, punching, progressive stamping, deep drawing, and secondary operations like bending and assembly. Each service ensures consistent quality and efficiency, tailored to meet diverse industry needs from automotive to electronics manufacturing.
HULK Metal has been focusing on providing high-standard metal product production and quality inspection services to global users since 2004. So far, it has integrated a complete supply chain and an advanced quality control center, as well as a professional service team.
CNC Machining services is the process of providing OEM and ODM services according to customer drawings after receiving them. Companies with more complete supply chains and stronger teams can provide better services. Larger companies or factories may focus more on serving larger companies. Therefore, choosing a suitable partner is crucial for the company's future development. HULK Metal has a complete supply chain and a professional team. It can choose a more suitable factory according to the order details to develop a suitable solution and deliver orders that meet quality requirements.
HULK Metal provides full-range metal fabrication services, including sheet metal cutting, stamping, welding, assembly, and quality inspection. With advanced equipment, experienced teams, and a well-integrated supply chain, we deliver high-precision parts faster and more affordably. Our services are ideal for automotive, construction, equipment manufacturing, and many other industries.
HULK Metal offers precise, efficient, and cost-effective metal cutting services for a wide range of materials and part types. Whether you need custom-cut sheet metal, pipes, or profiles, our expert team utilizes advanced equipment and techniques to ensure consistent quality and accuracy. Our services support diverse industries, including construction, automotive, machinery, and more. From prototyping to high-volume production, we provide tailored cutting solutions that help you streamline your projects and reduce production costs. Trust HULK Metal to deliver reliable results and superior service every step of the way.
HULK Metal provides comprehensive metal welding services, covering TIG, MIG, laser, and arc welding for sheet metal, pipes, and profiles. Our factory integrates precision welding with CNC machining and surface treatment to deliver durable and high-performance custom metal parts. We serve industries including construction, automotive, machinery, and more. With strong supply chain support and advanced inspection systems, we ensure every weld meets global standards. Partner with us to improve product integrity, reduce assembly time, and simplify your supply chain.
HULK Metal offers custom metal bending services for sheet, plate, pipe, and bar components to support your product design and structural needs. With advanced CNC bending equipment and experienced technicians, we deliver parts with consistent angles, tight tolerances, and clean finishes. Whether you need simple U-bends or complex multi-angle shapes, we provide flexible solutions for low- to high-volume production. From raw material preparation to final inspection, every step is controlled to ensure reliable quality and quick turnaround. Send your drawings or samples to start your bending project with confidence.
HULK Metal provides professional metal stamping services for manufacturing a wide variety of custom parts with precision and consistency. From thin sheet components to thick plate parts, we offer flexible production solutions tailored to your drawings and needs. With advanced stamping equipment, a skilled team, and a robust quality control process, we help you reduce costs and shorten delivery time. Whether you're producing brackets, flanges, covers, or other parts, we support your project with high efficiency and reliable service at every step.
Factories specializing in precast concrete lifting anchors typically feature advanced forging, casting, and machining capabilities. These factories are equipped with high-precision molding lines, heat treatment, and quality inspection stations. Their integrated production processes enable the manufacture of reliable, high-strength anchors for safe and efficient concrete handling.
Our foot anchors come in a variety of sizes to suit different precast concrete lifting needs, with precise dimensions tailored for optimal performance. Each anchor's Working Load Limit (WLL) is clearly specified to ensure maximum safety during handling and lifting. HULK Metal's parameters guarantee reliable strength and compatibility, meeting industry standards to support secure and efficient lifting operations on any construction site.
Here we show all the load groups, dimensions, surface treatments and other information of Lifting Pin Anchor that we can currently provide. If you want to know more, please leave us a message or download our product catalog. We look forward to your ordering to us. We will develop a perfect solution and the most competitive price for you.
Our lifting pin (dog bone) anchors are available in various sizes, load capacities, and surface treatments to suit different precast concrete applications. Manufactured from high-quality steel, each anchor meets strict dimensional and performance standards. Detailed specifications, including length, diameter, and rated load, ensure compatibility with standard lifting systems. We can also customize parameters based on your drawings or project requirements, providing optimal lifting solutions that improve safety, efficiency, and durability in your construction or precast production processes.
HULK Metal offers precast concrete lifting eye anchors in a range of sizes and load capacities to meet the needs of different types of projects. Material grade, usually high-strength steel like 20Mn2 or Q345, lengths between 50 and 300 mm, and safe working loads up to 32 tons are important considerations. Corrosion resistance is increased by surface treatments like electric galvanizing and hot dip. In demanding environments, these anchors perform better than standard options thanks to their threaded ends for secure embedding and eye diameters optimized for clutch compatibility.
The parameters of precast concrete double head lifting pin anchors include detailed dimensions and Working Load Limits (WLL) to ensure correct selection for your project. HULK Metal provides precise specifications for each size, helping you match anchors to specific lifting requirements. All parameters comply with CE and ISO 9001 standards, ensuring consistency, safety, and compatibility with related lifting systems. Accurate data supports safe handling and optimal performance in precast concrete construction.
HULK Metal can provide CE-certified spherical head lifting anchors. We have an ISO 9001-certified forging factory to produce your order. A full range of molds can produce a full range of products. A well-equipped quality control center can conduct factory, mechanical properties, chemical properties, and other indicators. Each product can be tested 3 times safety equal to the tensile test. You are welcome to contact us at any time to visit the factory and place an order. We will provide you with more competitive quotations and quality services.
The table here shows the materials, certifications, surface treatments, specific parameters and corresponding CODEs of Lifting Pins for Precast Concrete that we can provide. You can get them through the download button above.
The Short Wavy Tail Anchor comes in a range of sizes and SWL capacities to suit various precast concrete applications. Available in materials including stainless steel, Q345, Q235, and 20#, it features raw, electro-galvanized, or hot-dip galvanized finishes. With a minimum safety factor of 3 and CE/ISO 9001 certification, each anchor ensures reliable performance. Detailed parameters include thread size, height, diameter, embedment depth, and DS, providing precise load handling for secure lifting.
We currently offer two types of wavy tail anchors: short and long. The difference between them is the distance from the extrusion point to the wavy tail. You can see their specific sizes in the table below. You can directly tell us the specific model and quantity. We will provide a better quotation.
Here are the models, thread types, load groups and other information of various types of Precast Lifting Thread Inserts. You can click to jump to the corresponding product details to learn more. You can also contact us directly to get a quote.
This table shows our Flat End Lifting Insert material, thread standard, SWL, surface treatment, unit weight, certification, safety factor and other information. You can click the button below the product to download the product brochure for more details.
Here is the parameter table of Solid Rod Lifting Insert, which shows the Solid Rod Lifting Insert size, surface treatment, certification, material, SWL, CODE and other information we can provide. If you need to know more, you can contact us at any time to obtain it.
HULK Metal's solid rod lifting and fixing sockets come in various sizes to match different load requirements. Built with materials like stainless steel or Q235, they undergo rigorous testing for safety. The table below outlines key dimensions and safe working loads, helping you select the right fit for your precast concrete needs.
Our combi lifting socket range includes various sizes and working load limits (WLL) to match diverse lifting requirements. Each model is precisely machined for accurate dimensions and optimal performance. Detailed parameters cover length, thread size, anchor dimensions, and rated load capacity, ensuring you can select the right product for your precast concrete lifting application. Specifications comply with CE and ISO 9001 standards for safety and reliability in every lifting task.
Our Flat End Fixing Socket with Cross Pin is available in multiple sizes and Safe Working Load (SWL) capacities to match diverse lifting needs. Each dimension is carefully engineered for optimal performance and verified through strict quality inspections. Whether for heavy or standard precast components, you can rely on precise specifications, consistent manufacturing tolerances, and a proven safety factor to deliver dependable results in every construction project.
Explore the detailed parameters of our fixing sockets with Bent ends, including various sizes and working load limits (WLL). These specifications help you select the right option for your precast concrete needs. Our products come in multiple diameters and lengths, with WLL ratings that ensure safer handling than basic alternatives. This overview highlights how our sockets deliver stronger performance across construction projects, backed by precise engineering for better integration and longevity.
Here, you can learn about the material, surface treatment, thread type, SWL and unit weight of the Tubular Lifting Insert we can supply. The price needs to consider the specific requirements such as model, quantity, packaging and transportation. You can contact us for more information.
Here you can see the material, surface treatment, SWL range, thread standard and range, CODE and surface treatment of Long Wavy Lifting Insert. You can click on the information above to download these contents for your better viewing.
HULK Metal provides detailed parameters for Solid Rod Fixing Sockets with Crossbar, including safe working loads, dimensions, and material options. These specs ensure compatibility with precast concrete applications, from thread diameters to lengths, all backed by certifications for reliable performance in bulk projects.
Our parameter table provides detailed specifications for each flat end lifting socket, including dimensions, safe working load (SWL), and thread size. This information ensures you can select the correct lifting insert for your precast concrete application. HULK Metal's precision manufacturing guarantees that all parameters strictly meet CE and ISO standards, delivering optimal compatibility, superior performance, and enhanced safety for lifting operations across diverse construction and infrastructure projects.
Our tubular lifting sockets are available in multiple sizes and safe working load options to suit various precast concrete lifting needs. Made from stainless steel or quality carbon steel, they feature precise threads, a safety factor above 3 times, and durable surface treatments. CE and ISO 9001 certified, each socket is manufactured and inspected to ensure consistent dimensions, load capacity, and performance, giving you confidence in every lifting application.
Our Long Wavy Lifting Socket range offers multiple load capacities, from 0.5 tons to 8.0 tons, to suit diverse precast lifting needs. Made from high-quality stainless steel, Q345, Q235, or 20# steel, each socket undergoes precision threading, strict tolerance checks, and optional surface treatments like electro-galvanizing or hot-dip galvanizing. With a minimum 3× safety factor and CE/ISO 9001 certification, these anchors deliver strength, durability, and reliable performance for demanding construction projects.
Crown Foot Anchors come in various sizes to suit diverse precast needs, with thread diameters ranging from M12 to M30 and lengths from 60mm to 155mm. Working Load Limits (WLL) start at 0.5 tons for smaller units and reach up to 3 tons for heavier applications, always maintaining a safety factor exceeding three times the rated capacity. These parameters allow versatile use in thin panels and slabs, where edge distances and panel thicknesses dictate optimal placement for maximum stability. Our team customizes dimensions based on your drawings, ensuring precise fits that enhance project safety and speed.
HULK Metal's flat plate lifting sockets come in a range of sizes tailored for various safe working loads, from 0.5 to 12.5 tons. Key parameters include thread diameters, heights, and base dimensions, all crafted from materials like stainless steel or Q235 for optimal strength. Surface treatments such as hot-dip galvanizing enhance corrosion resistance, while certifications ensure compliance. This table outlines specifications to help select the right socket for your precast concrete needs, balancing compactness with high performance.
Explore the key parameters of our flat end fixing sockets, including various sizes and working load limits (WLL) tailored to your needs. These details ensure compatibility with your precast concrete applications, from small panels to larger structures, providing stronger holds and better performance under stress.
HULK Metal's plate spread anchors come in standard sizes tailored for different load capacities, from 2.5 to 10 tons SWL. Materials include 20Mn2, Q345D, or customizable stainless steel, with surface treatments like raw, electro-galvanized, or hot-dip galvanized for enhanced durability. Each anchor boasts a safety factor of at least three, backed by ISO9001 and CE certifications. The table below details dimensions and codes, helping you select the right fit for your precast concrete needs. Contact our technical team for custom variations based on your requirements.
Our unilateral erection anchors come in various sizes to suit different safe working loads (SWL) from 2.5 to 26 tons, accommodating diverse precast concrete needs. Made from robust materials such as 20Mn2, Q345D, CM490, or stainless steel, they offer customizable options with surface treatments like electro-galvanized or hot-dip galvanized. Each anchor maintains a safety factor of at least 3, backed by ISO9001 and CE certifications. The table below details dimensions, ensuring precise fits for columns, beams, and wall panels in bulk production runs.
This section outlines key specifications for flat foot anchors, including safe working loads and dimensions to guide selection for precast projects. HULK Metal offers models from 2.5 to 26 tons SWL, crafted from durable steels with options for galvanized finishes. These parameters ensure compatibility with diverse concrete elements, supporting safer and more efficient lifts. Bulk buyers benefit from our ability to customize based on exact needs, backed by certifications that guarantee performance.
HULK Metal's erection anchors come in various sizes with safe working loads from 2.5 to 10 tons, made from materials like 20Mn2 or customizable options. These parameters ensure compatibility with diverse precast concrete elements, supported by our production expertise for bulk customization.
Our spread anchors are available in multiple sizes and safe working load capacities to meet different lifting demands. Manufactured from high-grade steels such as 20Mn2, Q345D, CM490, or stainless steel, they can be customized with suitable surface treatments. Each spread anchor is CE and ISO9001 certified with a minimum safety factor of three, ensuring consistent performance, durability, and compliance with international standards for precast concrete lifting applications.
HULK Metal's two hole anchors are available in various sizes and safe working loads (SWL) to suit diverse precast concrete applications. Crafted from high-strength materials like 20Mn2, Q345D, or stainless steel, they ensure durability and safety. With surface treatment options such as electro-galvanizing or hot-dip galvanizing, our anchors meet strict CE and ISO 9001 standards, guaranteeing reliable performance for bulk buyers across global projects.
Our Precast Concrete Lifting Lugs are available in multiple sizes and working load limits (SWL) to meet diverse precast concrete lifting needs. Manufactured from Q345D, Q355D, CM490, or G30CrMoV steel, they feature electro-galvanized surfaces and a minimum safety factor of 5. With CE and ISO 9001 certifications, each lifting lug ensures consistent strength, durability, and reliable performance, making them suitable for lifting and handling various precast concrete elements efficiently.
The Dog Bone Lifting Eye is available in multiple sizes and load capacities to meet different project requirements. Each unit is manufactured from high-quality steel, electro-galvanized for enhanced corrosion resistance, and tested to a safety factor of five times. With CE and ISO9001 certification, our lifting eyes ensure consistent performance. Bulk buyers can choose from a wide range of SWL options, making them ideal for various precast concrete lifting applications.
Our lifting clutch for pin anchor is engineered from high-grade materials such as Q345D, Q355D, CM490, and G30CrMoV, with customizable options available. Each clutch is electro-galvanized for enhanced corrosion resistance and tested to meet a minimum 5:1 safety factor. Certified by CE and ISO9001, the clutches are available in different safe working load (SWL) capacities, ensuring reliable lifting performance across varied construction and precast concrete projects.
We show you the material, test index, certification, size and CODE of Dog Bone Lifting Eye With Chain in a table. You can find what you want more clearly. If you need more parameters or inquire about the price, please contact us.
The parameter section of the Ring Clutch provides details on available sizes and Safe Working Load (SWL). Each model is clearly defined to match different precast lifting requirements. With strict load group markings and compliance with CE standards, customers can easily select the right clutch for their projects. These specifications help ensure that lifting operations remain safe, efficient, and fully aligned with international construction safety standards.
We can provide precast concrete lifting eyes made of high performance alloy steel with CE certification. The following table details some important parameters such as Safety Factor, Certification, Materials, SWL, etc. You can contact us at any time to get a quotation for the corresponding specifications.
The parameters of the Combination Ring Clutch provide clear details on dimensions, working load limits, and load groups, allowing customers to select the most suitable model for their project. Each clutch is designed with a five times safety factor to guarantee safety during lifting operations. By comparing specifications, buyers can quickly match the correct clutch with their spread anchors, ensuring efficiency, precision, and reliability in precast concrete handling.
We are able to provide clevis slip hooks in all sizes in the form. In addition to that, we also provide OEM service, and the engineers will make a perfect solution according to your drawings and give a more reasonable quotation.
Here are the specifications of the Clevis Grab Hooks we can offer. The table contains information such as CODE, Size, WLL, etc. You can tell us directly about CODE and quantity, and we will give you a more satisfactory quote.
HULK Metal currently offers eye grab hooks from 1/4"to 3/4". The following table shows the CODE and the corresponding specifications. You can choose the appropriate CODE according to the size of the chain. We support OEM services and can develop a complete solution based on the drawings or samples you send us, and give a more reasonable quotation.
HULK Metal can provide eye slip hooks in 7 sizes from 1/4" to 3/4" in both carbon steel and alloy steel, and in three surface treatments: electro-galvanized, hot-dip galvanized and powder sprayed. The table provides detailed product parameters, you can view them, or click the button on the upper right to download the catalog to learn more.
The parameter table of Rubber Recess Former clearly shows available sizes and load capacities. Buyers can easily choose suitable types from 1.5 to 32 tons, ensuring compatibility with Pin Anchor and Spread Anchor lifting systems.
Our lifting pin anchor recess former come in multiple configurations to match specific load demands in precast concrete projects. The table below details dimensions, weights, and safe working loads, helping you select the right model. Made from customizable rubber, these ensure compatibility with various anchors. We prioritize precision in sizing for better integration, reducing risks during lifting operations compared to generic options.
Precast Magnetic Formers have various styles, including fixed Precast Frame, Lifting Anchors Sockets and Spread Anchors. You can download our product catalog.
The parameters of Spread Anchor Rubber Recess Former cover multiple working load limits from 2.5 tons to 26 tons, providing flexibility for different precast concrete projects. Each type is designed with precise dimensions to match specific spread anchors, ensuring stable positioning and reliable lifting performance. Made from durable rubber with customizable options, these recess formers meet ISO9001 and CE standards, making them suitable for various construction and lifting applications.
As one of the excellent magnetic recess former suppliers in China, HULK Metal has advanced factories and a perfect supply chain to provide you with high-quality products and services. We can provide magnetic recess former with load group of 1.3, 2.5, 5, and 10 tons. Advanced quality inspection equipment and professional quality inspection personnel can ensure that each batch of goods meets higher qualification rates and quality requirements. We provide quality assurance services, you can rest assured to give us your order.
HULK Metal can provide CE-certified magnets for precast lifting and fixing inserts or sockets. Our factory has advanced machining equipment, laser cutting machines, and assembly lines, which can more efficiently complete CE-certified precast lifting fixing insert socket magnet with a higher pass rate. Our supply chain can help you save more costs through consistent management from top to bottom. Quality assurance service is our confidence in quality and our guarantee to you. You can rest assured to give us your order.
The parameters of Electrical Box Fixed Magnets include material, shape, size, and surface treatment options, allowing customization for different project requirements. The body is made of high-quality rubber, while NdFeB magnets provide strong holding power. With ISO 9001 and CE certifications, every batch meets international quality standards. Square, round, and other shapes are available. Surface treatment options like electro-galvanizing ensure enhanced durability in demanding precast concrete applications.
The parameters of Shuttering Magnets for Formwork include magnet strength, fixing body material, and surface treatment options. These Formwork Magnets are available in stainless steel, carbon steel, or alloy steel, ensuring durability and adaptability. Certificates such as ISO 9001 and CE guarantee consistent quality.
The Embedded Corrugated Pipe Fixed Magnet comes in different sizes, materials, and magnetic strengths to fit various corrugated pipe dimensions used in precast concrete. Each product is manufactured with strict quality control to ensure precision and durability. Customers can request customized designs, magnetic force adjustments, and base sizes according to their project needs. With flexible OEM/ODM support, HULK Metal delivers magnets that perform reliably and meet international standards for different concrete applications.
The parameters of Cast In Channel T Bolts cover standard and customized dimensions to meet diverse structural needs. Each bolt is designed with high load-bearing capacity and tested Safe Working Load (SWL) values to guarantee safety. Available in various thread sizes, head dimensions, and finishes, our T Bolts are suitable for different cast-in channel systems. Technical support ensures buyers receive accurate specifications for seamless installation and long-term performance.
HULK Metal's HALFEN Anchor Channels come in a range of dimensions and safe working loads (SWL) to suit diverse precast concrete applications. Each channel is precisely manufactured with cold-rolled or hot-rolled steel, ensuring structural integrity. SWL values are clearly specified to meet project requirements, and all products undergo strict quality control. This allows bulk buyers to select the exact channel type with confidence in performance and safety for their concrete projects.
The parameter section presents the detailed specifications of our precast wall connection wire loop boxes, including available sizes, breaking loads, and safe working loads. These values allow engineers and contractors to choose the most suitable type for their structural requirements. With CE and ISO 9001 certification, every wire loop box is manufactured under strict quality control, ensuring dependable performance and safety for different precast wall connection projects.
The parameters of our Cast in Channel cover a wide range of hot-rolled and cold-rolled types to suit different load requirements. Each specification ensures safe working loads, precise geometry, and compatibility with matching T-bolts. With certified strength and accurate dimensions, our HALFEN Channel products guarantee safer installation and reliable performance in precast concrete structures, giving engineers and contractors greater flexibility and confidence in large-scale projects.
Concrete screw bolts are available in different diameters, lengths, head styles, and surface treatments. At HULK Metal, we support customization according to drawings and requirements. Our galvanized concrete bolts come with electro-galvanizing and hot-dip galvanizing finishes, ensuring long service life. We provide a full range of dimensions to meet different project applications, from precast construction to heavy-duty industrial installations. Bulk buyers can benefit from efficient production and consistent quality.
The parameters of HULK Metal's cast in loops include a range of diameters, lengths, and working load limits (WLL) to suit different precast concrete lifting needs. Each loop is manufactured to precise dimensional tolerances and tested for tensile strength exceeding three times its rated capacity. With clear specifications, you can select the right cast in lifting loop to ensure optimal performance, safety, and efficiency for your specific construction application.
Our lifting loops come in a wide range of sizes and safe working loads to suit various precast concrete lifting needs. Each is crafted from durable alloy or carbon steel and finished with electro-galvanizing for superior corrosion resistance. With a safety factor of four or more, precision threading, and CE/ISO 9001 certification, they deliver reliable performance, easy compatibility with lifting sockets, and consistent quality in demanding construction environments.
The HULK Metal handrail bracket structural pipe fittings come with detailed dimensions, hole sizes, and pipe diameters that match to make sure they work together. There are many types of surface treatments that can be used to meet different environmental needs. These include hot-dip galvanizing, double-coating galvanizing, and powder coating. Every product has its code that makes it easy to find and order, which helps you keep track of projects better while making sure they are always high quality and work the same way.
HULK Metal manufactures Internal Swivel Tee Structural Pipe Fittings in different tube sizes to suit various project requirements. We provide options in malleable iron, ductile iron, and customizable materials, all available with galvanizing, powder-coating, or special finishes. Standard tube sizes include 33.7 mm, 42.4 mm, and 48.3 mm, with additional customization available upon request. These fittings are designed to meet higher structural performance and provide longer-lasting protection against corrosion.
Our Three Socket Angle Tee Structural Pipe Fitting is available in multiple tube sizes and customizable designs to fit diverse project requirements. Customers can choose from durable malleable iron, ductile iron, or stainless steel with various surface finishes, including galvanizing and powder coating. With adjustable angles from 0–11 deg, this fitting ensures flexible installation and long-lasting performance. Each fitting is manufactured under strict standards, ensuring consistency, reliability, and high load capacity.
Our Slope Short Tee Structural Pipe Fittings are produced with strict dimensional accuracy and high-quality materials. They are available in malleable iron, ductile iron, or customized alloys, and can be finished with galvanizing, powder coating, or other protective layers. Multiple tube sizes and angles (0–11 degrees) ensure compatibility with different project requirements. Customizable options are also available to meet the special needs of industrial and architectural applications.
The parameters of base flange structural pipe fittings include different sizes, codes, surface treatments, and dimensions to match a variety of pipes. Each type is carefully produced with precise casting and strict testing to ensure reliability. Options such as hot-dip galvanizing, double galvanizing, and powder coating provide enhanced corrosion resistance. Buyers can select the most suitable specifications according to application needs, ensuring better adaptability and long-term performance in structural projects.
The parameters of Railing Base Flange Structural Pipe Fittings include detailed size options, different pipe compatibility, and surface treatment codes. Buyers can choose from hot-dip galvanized, double galvanized, powder coating, or raw black finishes to match project needs. Each size provides accurate dimensions to ensure easy installation and secure support. These fittings are designed for reliable use in railing uprights, safety barriers, and various structural frameworks, meeting diverse customer requirements.
The Short Swivel Tee Structural Pipe Fitting is available in a variety of sizes to meet different system requirements. Manufactured from malleable iron, ductile iron, or customized materials, it can be supplied with hot-dip galvanizing, powder coating, or other protective finishes. The fitting ensures reliable connections across multiple tube diameters. Technical data, including size codes, tube compatibility, and surface options, helps buyers choose the most suitable product for their projects.
The parameters of external sleeve joint structural pipe fittings cover dimensions, surface finishing, and product codes. These fittings are available in multiple pipe sizes to match different railing or structural requirements. Customers can choose from hot-dip galvanizing, double galvanizing, powder coating, or raw black finishes. Each fitting has a specific code for easy identification, ensuring you can order and manage products more efficiently for your projects.
Our Swivel Base Flange structural pipe fittings are available in a range of sizes and materials to meet diverse project requirements. Choose from malleable iron, ductile iron, or customizable materials, with surface treatments like galvanizing, powder coating, or custom finishes. Standard tube sizes include 26.9mm, 33.7mm, 42.4mm, 48.3mm, and 60.3mm, while bespoke options are available. Each fitting is precision-engineered to ensure secure, long-lasting connections in industrial, commercial, and DIY applications.
HULK Metal provides 90 Degree Two Socket Tee Structural Pipe Fittings in a variety of sizes to fit different tube diameters. Manufactured from malleable iron, ductile iron, or customized materials, these fittings are available with galvanized, powder-coated, or tailored finishes. They are designed to meet diverse application requirements, ensuring strength, corrosion resistance, and adaptability. Each fitting can be customized with specific dimensions and surface treatments.
Our Three Socket Cross Structural Pipe Fittings come in various sizes to fit standard pipes from 26.9mm to 60.3mm. Crafted from malleable or ductile iron, they can be customized to meet specific project needs. Surface finishes include galvanized, powder-coated, or tailored options. These fittings are ideal for industrial, agricultural, and DIY projects where reliable pipe connections and corrosion resistance are essential. Custom dimensions and codes are available upon request.
Our Clamp on Tee Structural Pipe Fittings are available in multiple tube sizes to fit diverse applications, with customizable material options including malleable iron, ductile iron, and other metals. Surface treatments such as galvanized, powder-coated, or custom finishes enhance durability and corrosion resistance. Each fitting is produced to meet strict international codes and standards, providing reliable performance for structural projects, guardrail systems, handrails, and DIY installations, ensuring safety and long-lasting use.
Our Two Socket Cross Structural Pipe Fittings are available in multiple sizes and materials to meet different construction needs. They can be made of malleable iron, ductile iron, or customized materials, and are offered with hot-dip galvanizing, powder coating, or other surface treatments for enhanced durability. With size options ranging from 26.9mm to 60.3mm, and customizable specifications, they can perfectly match your project requirements.
The Three Socket Tee Structural Pipe Fitting comes in multiple sizes to fit tubes ranging from 26.9mm to 60.3mm, with customizable options for other dimensions. HULK Metal offers a choice of materials such as malleable iron, ductile iron, or aluminum, with surface treatments including galvanizing, powder coating, or tailored finishes. This flexibility ensures suitability for a wide range of environments, from industrial projects to outdoor guardrail systems.
HULK Metal Side Outlet Elbow Structural Pipe Fittings are available in a wide range of sizes to meet different system requirements. Customers can choose from various surface finishes, including hot-dip galvanizing, double-coating galvanizing, and powder coating, to suit different environments. Each fitting is designed with accurate dimensions and product codes, making selection and installation easier, faster, and more reliable for international projects.
The parameters of the Variable Swivel Elbow Structural Pipe Fitting cover material options, surface treatments, and tube size compatibility to meet different project requirements. You can choose from malleable iron, ductile iron, stainless steel, or aluminum, and apply galvanizing, double-coating, or powder-coating finishes. Various tube sizes are available to fit different systems, and customization options are provided to meet specific structural demands.
The Reducing Short Tee Structural Pipe Fitting comes in a variety of tube size combinations to meet different railing and construction needs. Manufactured with malleable or ductile iron, it offers strength, stability, and long service life. Customers can choose from galvanized, powder-coated, or custom finishes to match specific project requirements. Additional sizes and OEM solutions are available to support diverse applications worldwide.
The parameters of the Single Socket Tee Structural Pipe Fitting demonstrate its adaptability for diverse projects. Available in malleable iron, ductile iron, or customized materials, it can be finished with galvanizing, powder coating, or other treatments to ensure corrosion resistance. With standard tube sizes of 33.7mm, 42.4mm, and 48.3mm, plus customizable options, HULK Metal guarantees fittings that precisely match your installation needs.
HULK Metal provides Single Lugged Bracket Structural Pipe Fittings with customizable specifications to meet different project requirements. You can choose from malleable iron, ductile iron, or other requested materials. The surface can be treated with galvanizing, powder coating, or tailored finishes for enhanced durability. Standard tube sizes include 33.7mm, 42.4mm, and 48.3mm, while customized dimensions are also available to suit unique applications.
The Vertical Railing Side Support Structural Pipe Fitting parameters showcase its adaptability and strength. Made from malleable or ductile iron, with options for galvanized, powder-coated, or customized surface treatments, it is designed to fit common tube sizes such as 33.7mm, 42.4mm, and 48.3mm. Additional customization is available to meet diverse project requirements, ensuring compatibility with international standards and delivering reliable performance across different installation environments.
Our Cradle Clamp Structural Pipe Fittings are available in multiple tube sizes, including 33.7mm, 42.4mm, and 48.3mm, with customizable options to match specific project needs. Each fitting is manufactured from high-quality malleable or ductile iron and can be finished with galvanizing, powder coating, or other requested surface treatments. With standardized dimensions and accurate machining, these fittings ensure secure assembly, consistent quality, and adaptability for various railing and structural pipe systems.
Our Horizontal Railing Side Support Structural Pipe Fittings are available in multiple tube sizes including 33.7mm, 42.4mm, and 48.3mm, with customizable options to meet your project needs. Produced from malleable or ductile iron, they can also be tailored with alternative materials. Multiple surface treatments such as galvanizing and powder coating are provided, ensuring corrosion resistance and a longer service life in different environments and installation conditions.
HULK Metal provides Adjustable Short Tee fittings in multiple tube sizes, ranging from 26.9 mm to 48.3 mm, with an adjustable angle of 30 deg–60 deg. These fittings can be customized in materials such as malleable iron or ductile iron, with surface treatments including galvanizing or powder coating. The flexibility in specifications and finishes ensures compatibility with diverse project requirements and guarantees reliable performance in different installation environments.
The Single Swivel Combination Structural Pipe Fitting comes in a wide range of tube sizes from 26.9mm to 60.3mm, with customizable options to meet project-specific requirements. Made from malleable iron, ductile iron, or customized materials, it supports multiple surface treatments, including galvanizing and powder coating. Each product is manufactured to strict standards, ensuring consistency, durability, and compatibility with different structural pipe systems.
The Add on Short Tee Structural Pipe Fitting is available in multiple tube sizes to suit different system requirements. Produced with malleable iron, ductile iron, or custom materials, the fittings can be finished with galvanizing, powder coating, or special treatments. Each product is manufactured with strict quality standards to ensure durability, precision, and compatibility. Customers can also request tailored dimensions and surface finishes for specific applications.
The parameters of Variable Elbow Structural Pipe Fitting include multiple pipe size options, corrosion-resistant surface treatments, and internationally standardized codes. Customers can select from hot-dip galvanizing, double-coating galvanizing, or powder coating depending on the application environment. Each fitting is designed to meet precise dimensional accuracy, ensuring smooth installation and compatibility. With clear specification codes, buyers can easily choose the right size and surface finish for their project needs.
The Adjustable Angle Two Socket Cross Structural Pipe Fitting is produced with malleable iron, ductile iron, or customizable materials. Available surface treatments include galvanizing and powder coating for enhanced protection. It fits standard tube sizes of 33.7mm, 42.4mm, and 48.3mm, with adjustable angles ranging from 45° to 90°. Customization options are also available, allowing you to choose the best dimensions and finishes for your project requirements.
Our Galv Ground Socket Structural Pipe Fittings are available in various tube sizes to meet different construction needs. Manufactured with malleable iron, ductile iron, or customized materials, they offer both strength and flexibility. The surface treatment can be galvanized, powder-coated, or customized to enhance corrosion resistance. Standard tube sizes include 33.7mm, 42.4mm, and 48.3mm, while customized options are available to suit specific project requirements.
HULK Metal produces Side Palm Fixing Structural Pipe Fittings in multiple sizes and materials to suit diverse railing applications. Standard socket dimensions cover tube sizes of 33.7mm, 42.4mm, and 48.3mm, with options for customization. Customers can choose surface treatments such as hot-dip galvanizing, double-coating, or powder coating for enhanced corrosion resistance. Each fitting is produced under strict quality control to ensure accuracy, durability, and long-term performance in various projects.
The Double Lugged Bracket Structural Pipe Fitting is available in multiple sizes and surface finishes to fit diverse structural applications. Manufactured with malleable iron, ductile iron, or customized materials, it can be treated with galvanizing, powder coating, or other finishes. Standard tube compatibility ranges from 26.9mm to 48.3mm, with customizable options available. Each fitting is precisely designed and coded to meet international quality and installation standards.
HULK Metal's Double Male Swivel Structural Pipe Fittings are manufactured with strict dimensional standards and various surface treatments, such as hot-dip galvanizing or powder coating, to enhance durability. Multiple tube sizes from 26.9mm to 60.3mm are available to meet different structural requirements, and customization is supported. Each product is identified with specific codes for easy procurement and project management, ensuring seamless integration into your system.
Our Plug Structural Pipe Fittings are manufactured with malleable iron, ductile iron, or customized materials to meet different project requirements. Multiple surface treatments such as galvanizing or powder coating ensure durability and corrosion resistance. Standard sizes fit common tubes ranging from 26.9 mm to 60.3 mm, with customization available. Each product is precisely designed and tested to ensure secure fitting, reliable sealing, and long-lasting performance in various structural systems.
Our Hook Structural Pipe Fittings come in multiple sizes to fit different pipe diameters. They are available in cast iron, stainless steel, and aluminum with surface treatments including hot-dip galvanizing, double-coating galvanizing, and powder coating. Each hook meets international quality standards, and their dimensions, materials, and coatings are carefully selected to ensure durability, corrosion resistance, and compatibility with your handrail or pipe systems.
Our slope railing base flange pipe fittings are available in multiple sizes and surface finishes to match different railing system requirements. With precise dimensions and high-quality materials such as malleable iron and ductile iron, these fittings provide superior stability and performance. Options include hot-dip galvanizing, double galvanizing, powder coating, or raw black finish, allowing you to choose the most suitable treatment for your application environment.
Our gate hinge structural pipe fittings are available in multiple sizes to match standard pipes, ensuring easy installation and reliable strength. Each hinge can be supplied with hot-dip galvanized, double galvanized, powder-coated, or raw black surfaces, providing excellent resistance to corrosion. With clearly defined product codes, dimensions, and finishes, you can select the right fitting quickly for your project. These fittings are designed to deliver dependable performance in both indoor and outdoor applications.
The Gate Eye Structural Pipe Fittings come in multiple sizes ranging from DN20 to DN40, making them suitable for different gate and railing systems. Each size is precisely cast and surface-treated to guarantee durability. Options include hot-dip galvanizing, double galvanizing, powder coating, and raw black finishes. Each fitting is coded for easy identification, ensuring accurate ordering, faster processing, and reliable assembly in both fencing and DIY structural applications.
The 119A Galvanized Railing Connectors Add-on Two Socket Cross is different from the 119 type in that it can add two pipes to an already completed system.
It is connected by two parts with two bolts. When using it, we only need to pull out one of the bolts, buckle it in a specific position of the pipe, insert the bolt and tighten it, insert the two pipes into the socket respectively, adjust the angle of the pipe, and tighten the three bolts on the 119A to complete the installation.
We will develop a perfect solution based on your needs. The cycle of changing molds in foundries to produce different products is very long, so it is recommended that you order a larger quantity when purchasing, which can effectively reduce production costs and improve production efficiency.
HULK Metal has more than 20 years of experience in supplying galvanized pipe railing fittings and has established a complete supply chain to provide you with production, quality inspection, packaging, transportation and after-sales service. Quality assurance service is our commitment to you. You can rest assured to give us your order.
HULK Metal currently provides three galvanizing methods: electroplating heat and double coating. You can purchase according to your needs.
HULK Metal is a pipe clamp fittings manufacturer in China, with ISO 9001 certification and advanced foundry. You can contact us at any time to visit the factory and place an order with us after understanding our capabilities.
We currently only have CD reducing 90 degree elbow. If you have special requirements and the quantity is large, we also support OEM service.
HULK Metal has been providing higher-quality sheet metal stamping production services to customers worldwide since the end of the 20th century. To this end, we have continuously integrated stamping factories, raw material suppliers, packaging material factories, and other resources and continuously improved supply chain management and service levels. So far, we have provided hundreds of sheet metal stamping parts OEM services for hundreds of companies around the world. You can contact us at any time to visit our factory and place your order with us after understanding our production capacity and service capabilities.
HULK Metal is an experienced sheet metal fabricator that has provided high-quality OEM services to dozens of automotive parts buyers worldwide. We are familiar with and master advanced sheet metal manufacturing processes such as laser cutting, punching, deep drawing, spinning, bulging, etc., and have advanced production equipment and an experienced team of workers. We strictly implement ISO 9001 and ISO 16949 quality management. The professional technical team will develop a more complete solution according to your requirements to improve order production efficiency and minimize costs while ensuring product quality.
We can process aluminum, steel, stainless steel plates and strips with thicknesses ranging from 0.1mm to 20mm. The tolerance can reach 0.001mm.
We provide comprehensive after-sales service to let you enjoy comprehensive quality assurance. You can rest assured to entrust your sheet metal automotive parts orders to us for production.
The table below shows you our production capabilities.
HULK Metal Wire Grips are available in multiple load ratings, cable diameters, and surface finishes to match diverse applications. Our catalog covers grips for copper, aluminum, ACSR, guy wire, and steel rope. Each product is engineered for strong holding capacity, safety, and efficiency. With detailed specifications and clear coding, bulk buyers can easily choose the right Wire Pulling Grips for their projects.
The table below shows the wire diameter range, tensile force range and MOQ of steel jaw cable puller we can provide. You can download our product catalog to get more detailed parameters.
We can currently produce a variety of high-performance alloy steels that can be used for wire diameters between 0.08~1.8in (2.03~45.7mm), tensions between 1500~20000lbs (0.68~9tons) and for various wire types of Jaw Cable Gripper.
We have 4 types of ABC Conductor Grips to choose from, Load Capacity, ABC diameter, CODE and product image information can be found in the table below. You can also click the button on the right side of the image to download them directly.
Jaw Rope Puller Parameter
Jaw Rope Puller has passed strict sampling inspection before leaving the factory. Each batch of goods can meet the use requirements. We have a complete supply chain to provide you with more thoughtful services and higher quality products.
Jaw Rope Puller is a tool designed to pull Copper Cable, Cover Cable, Bare Aluminum Cable, ACSR, ACSS, AAC, ABC, Bare Cu Cable, Guy Wire, Wire Rope, Barbed Wire, Trolley Wire, etc. to a specific location. One end of the Jaw Rope Puller is used to connect to the tensile machine, and the other end is connected to the rope. As the tensile machine is started, the cable will gradually tighten or be pulled out from one end of the cable duct.
There are two designs for the jaws of the Jaw Rope Puller terminal jaws:
One is that the fixed jaw is straight and smooth, and the movable jaw is curved with longer anti-skid teeth. This type has a smaller contact area with the cable than the other and is more suitable for tightening harder metal ropes.
The other type has both the fixed jaw and the movable jaw straight and horizontal, and both are filled with shallow anti-skid teeth. This type has a larger contact surface with the cable, which can provide stronger friction while protecting the outer skin of the rope. It is suitable for more rope operation scenarios.
Some types of Jaw Rope Pullers will have side baffles, which are used to prevent the cable from detaching from the side of the Jaw Rope Puller due to force changes when tightening, causing accidents.
They all use springs to achieve automatic merging after opening. We use high-elastic alloy springs that can be used repeatedly for hundreds of times.
Jaw Rope Puller Supplied by HULK Metal is made of high-performance alloy steel through hot die forging. It has stronger performance.
Most of its parts are produced by hot die forging, the baffles are laser cut, and the parts are assembled by our assembly line after galvanizing.
Its surface treatment is electrogalvanizing. Its average coating thickness is 5μm.
Our Jaw Wire Puller has two types of jaws to accommodate a wider variety of wires. Some types also have side panels to prevent the wire from slipping out from the side during tensioning. You can choose a more suitable one based on factors such as wire type, wire diameter, and usage scenario.
HULK Metal can provide you with a variety of jaw grip pullers. You can choose a more suitable style according to the Guy Wire diameter, tension and other parameters, as well as the contact surface damage requirements.
Factories specializing in metal stamping parts combine advanced stamping presses, precision tooling workshops, and quality control labs to ensure consistent production. These factories often integrate blanking, punching, forming, and secondary finishing processes under one roof. Equipped to handle high-volume orders with strict tolerances, they serve industries like automotive, electronics, and appliances, delivering reliable, customized metal stamping solutions efficiently and with superior craftsmanship.
This collection of articles delves into various aspects of metal stamping parts, including process innovations, material selection, and quality control. Topics cover how stamping improves manufacturing efficiency, comparisons with alternative methods, and practical tips for design optimization, providing valuable insights for engineers and buyers alike.
As a top metalworking service provider, we want to let every customer experience a sense of security in purchasing, sales, etc., and better realize their value through continuously defining new standards for products and services.
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