EN
RUEach bolt undergoes dimensional inspection using precision measuring tools to ensure it meets specified length, diameter, and head size tolerances before moving forward.
1 CE, ISO 9001 Concrete Screw Bolts
2 Shorter Production Cycle
3 Deliver Faster
4 Comprehensive After Service.
Our concrete screw bolts are designed for reliable installation without expansion anchors. Galvanized concrete screws provide superior corrosion resistance, making them ideal for indoor and outdoor use. HULK Metal offers diverse sizes, surface treatments, and customized solutions to match your needs.
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.
Specification | Diameter Range | Length Range | Head Type Options | Surface Treatment | Material | Application |
Standard Size | M6 – M16 | 40mm – 200mm | Hex Head, Flat Head, Flange Head, Countersunk | Electro-galvanized, Hot-dip galvanized, Stainless steel | Carbon Steel, Stainless Steel | Concrete, Brick, Block |
Custom Size | As per drawings | As per drawings | OEM available | Powder Coating, Zinc Plating, HDG | Carbon Steel, Stainless Steel | Precast Concrete, Industrial Anchoring |
HULK Metal produces concrete screw bolts in a wide range of sizes and specifications to support diverse construction and industrial needs. Standard diameters typically range from M6 to M16, with lengths from 40mm to 200mm, suitable for both light-duty and heavy-duty anchoring. Common head styles include hex head, flange head, flat head, and countersunk head, giving buyers flexibility for different installation methods.
For corrosion resistance, we provide multiple surface treatments such as electro-galvanizing for cost-effective indoor use, hot-dip galvanizing for stronger outdoor protection, and stainless steel for maximum durability. Our galvanized concrete bolts ensure reliable performance even in harsh environments.
We also support customized solutions based on customer drawings or samples. If your project requires specific lengths, thread types, or surface coatings, our engineering team can design and produce molds quickly, ensuring a shorter lead time. All products are manufactured with high-strength carbon steel or stainless steel, and each batch undergoes strict dimensional and thread inspections before shipment.
Our comprehensive supply chain allows us to provide stable, large-volume supply at competitive prices. With HULK Metal's concrete screw bolts, bulk buyers can expect consistent quality, faster delivery, and complete technical support for any precast concrete or anchoring project.
Concrete screw bolts are widely used in construction and industrial projects for secure, reliable anchoring. At HULK Metal, we supply galvanized concrete bolts with advanced production and strict quality control to ensure long-lasting performance. Our products cover a wide variety of sizes, types, and finishes, making them suitable for both standard and customized applications. With faster delivery, OEM services, and professional after-sales support, we help bulk buyers achieve stable and efficient supply.
Concrete screw bolts, also known as galvanized concrete screws, are self-tapping anchors specifically designed for installation in concrete, brick, and block. Unlike expansion anchors, they create their own threads in the base material, which provides strong holding power while reducing stress on concrete. These bolts are commonly made from high-strength carbon steel or stainless steel and often finished with galvanization for corrosion resistance.
Their advantages include easy installation, removability, and versatility in different construction applications. They are frequently used to fasten steel plates, brackets, wood structures, machinery, and other components securely into concrete. Concrete screw bolts can be installed with standard drilling tools, and their removable feature allows adjustments or replacements without damaging the substrate. With multiple head types and surface treatments available, they provide reliable solutions for both indoor and outdoor projects, especially where durability, stability, and cost efficiency are required.
Hex head concrete screw bolts are the most common type, featuring a hexagonal head for easy installation using standard wrenches. They provide strong torque transfer and reliable clamping force, making them ideal for heavy-duty applications such as securing structural steel, machinery, and industrial equipment to concrete surfaces.
Flange head concrete screw bolts are designed with a built-in washer-like flange, distributing load over a larger surface. This reduces the risk of pull-through and provides improved stability. They are widely used in precast construction, railings, and support frames, offering both strength and better resistance against loosening during vibration.
Flat head concrete screw bolts are designed for countersunk applications where a flush surface finish is required. These bolts are often used for fastening fixtures, plates, and furniture to concrete without protruding heads. They combine secure anchoring with a clean, aesthetic appearance, suitable for indoor projects and decorative installations.
Countersunk concrete screw bolts are similar to flat head bolts but provide a deeper flush installation. They are commonly used where smooth surfaces are critical, such as flooring or paneling applications. Their self-tapping threads allow fast installation, while the countersunk head ensures components are firmly seated without protruding above the surface.
Stainless steel concrete screw bolts provide maximum resistance against rust and corrosion, making them suitable for marine, coastal, or chemical environments. They deliver strong anchoring performance with long service life, even in harsh outdoor conditions. These bolts are favored in industries that demand both strength and long-term durability without frequent replacements.
Our team works closely with you to understand project requirements such as specifications, surface treatment, order quantity, and delivery needs. This ensures we develop accurate production solutions tailored to your application, providing cost efficiency and shorter delivery cycles.
We source raw materials from trusted suppliers, ensuring consistency and traceability. High-quality carbon steel and stainless steel are used to guarantee performance. Our procurement team balances cost efficiency with quality standards, ensuring both competitive pricing and reliable mechanical strength for every concrete screw bolt produced.
Concrete screw bolts are produced through precision cold forging to achieve accurate dimensions and strong mechanical properties. This process improves the bolt's tensile strength while ensuring a smooth surface finish, providing durability and reliability for demanding construction and industrial applications.
After forging, every batch undergoes dimensional and hardness inspection to verify compliance with customer requirements. Our quality team uses advanced testing instruments to confirm accuracy before moving bolts into subsequent production processes, ensuring only fully qualified products continue through the production line.
We apply various surface treatments such as electro-galvanizing, hot-dip galvanizing, or stainless steel finishing to improve corrosion resistance. These processes enhance durability and extend service life, making our galvanized concrete bolts suitable for both indoor and outdoor environments, including harsh or corrosive conditions.
A second round of testing is conducted after surface treatment to verify coating thickness, adhesion, and corrosion resistance. These inspections guarantee that every bolt meets international standards, providing consistent performance and ensuring customer confidence in large-volume orders delivered by HULK Metal.
Our packaging process uses durable, customizable solutions to protect products during transport. With our in-house logistics team and freight consultation center, we deliver orders efficiently, helping buyers reduce shipping costs and ensuring faster, more reliable delivery schedules for international projects.
We provide professional after-sales support for all orders. If any quality issue arises, our team will respond promptly, offering replacements or solutions. Buyers benefit from technical guidance, long-term cooperation, and confidence that their supply chain remains stable and well supported.
They are used for anchoring steel, wood, or machinery into concrete, brick, or block surfaces.
Yes, galvanization protects bolts from rust, making them suitable for both indoor and outdoor environments.
Yes, they can be removed and reinstalled without damaging the substrate, unlike expansion anchors.
We supply carbon steel and stainless steel options with different galvanization finishes.
Yes, we can design and produce according to your drawings or samples efficiently.
We supply hex head, flange head, flat head, countersunk head, and OEM designs.
Every batch undergoes multiple inspections, including dimensional, thread, and coating quality checks.
Electro-galvanizing, hot-dip galvanizing, powder coating, and stainless steel finishes are available.
They are widely used in construction, infrastructure, machinery, and industrial installation projects.
Delivery depends on quantity, but advanced equipment ensures faster production cycles.
HULK Metal enforces a strict quality control system to guarantee that every batch of concrete screw bolts meets international standards. From raw material inspection to pre-shipment testing, each step is carefully monitored. With advanced testing instruments and experienced QC engineers, we ensure dimensional accuracy, thread precision, coating durability, and proper quantity. Buyers can rely on our systematic inspections to receive consistent, high-quality galvanized concrete bolts for their projects.
Each bolt undergoes dimensional inspection using precision measuring tools to ensure it meets specified length, diameter, and head size tolerances before moving forward.
Before shipping, our QC team performs random sampling inspections to verify quality, packaging integrity, and compliance with customer requirements for safe delivery.
Final inspections confirm correct quantities, packaging labels, and documentation. This ensures buyers receive accurate orders without shortages or mismatches before dispatch.
Threads are checked with gauges and instruments to confirm correct pitch, depth, and accuracy, ensuring smooth installation and maximum anchoring performance in concrete.
HULK Metal operates modern factories equipped with advanced forging machines, surface treatment lines, and quality control laboratories. By integrating production, inspection, and logistics, we shorten lead times and maintain stable supply capacity. Our factories are ISO 9001 certified, ensuring systematic production management and strict quality standards. Bulk buyers can benefit from our efficient operations, advanced technology, and reliable support to secure high-quality galvanized concrete bolts consistently.
Choosing HULK Metal means securing a reliable partner with complete production capabilities, strict quality control, and competitive supply chain advantages. Our galvanized concrete bolts are produced with advanced equipment, inspected with modern instruments, and supported by professional teams. We provide OEM and ODM customization, shorter production cycles, faster delivery, and comprehensive after-sales services. With us, bulk buyers save time, reduce costs, and receive high-quality concrete screw bolts that perform consistently in demanding applications.
To help buyers better understand applications and performance, we provide related articles about concrete screw bolts, including installation techniques, surface treatment comparisons, and industry insights. These resources explain how to select the right galvanized concrete bolts for different projects and highlight the benefits of various head types and finishes. With practical knowledge and technical details, our articles are designed to support bulk buyers in making more informed purchasing decisions and achieving more cost-effective solutions.
In addition to concrete screw bolts, HULK Metal also supplies a wide range of precast concrete accessories such as lifting anchors, spread anchor recess formers, wire loop boxes, and cast-in channels. These products are produced under the same strict ISO 9001 management system, ensuring quality and reliability. By offering comprehensive solutions, we help bulk buyers reduce procurement complexity, save costs, and establish a stable, long-term supply chain for all precast construction and industrial hardware requirements.
HULK Metal offers high-quality foot anchors designed for secure lifting of precast concrete elements. Our CE and ISO 9001 certified lifting pin anchors ensure a threefold safety factor, shorter production cycles, and prompt delivery.
HULK Metal has supplied tens of millions of Lifting Pin Anchors ranging from 1.3 tons to 32 tons to hundreds of buyers around the world. We have a full range of products and a complete supply chain to provide you with quality services. We provide quality assurance services. Please feel free to inquire.
Q345/CM490/20M2/45#/Others
Galvanized/Black
1.3~45.0
≥3
HULK Metal stands out as a leading manufacturer of lifting eye anchors, specializing in precast concrete lifting eye anchors that meet stringent CE certification with a 3 times safety factor.
Q345/CM490/20M2/45#/Others
Galvanized/Black
1.3~5.0
≥3
CE Certified Spherical Head Lifting Anchors
All Size of Spherical Head Lifting Anchors
Can Pass 3 Times Safety Equal
Lifting Pins for Precast Concrete supplied by HULK Metal are CE certified. We can supply Lifting Pins that can pass the tensile test of 3 times the safety factor and strictly implement the IS0 9001 standard to provide high-quality services.
Wavy tail anchor is made of high-performance steel pipe and rebar extrusion after bending. Its SWL range is between 0.5 and 8.0 tons. There are two thread standards, M and RD.
HULK Metal is a well-known supplier in China, providing high-quality and cost-effective Precast Lifting Thread Insert. With a complete supply chain and a professional team, we have provided flat end insert, solid rod insert, Tubular insert and others to global customers. We provide complete QA services. Looking Forward Your Inquiry.
HULK Metal is one of the high-quality Flat End Lifting Insert suppliers in China. In order to provide better services and products, we have integrated a complete supply chain. We strictly implement ISO 9001 management, and after years of development, we can now supply a full range of CE certified Flat End Lifting Insert.
Solid Rod Lifting Inserts supplied by HULK Metal have passed the CE certification. They can pass the tensile test with 3 times the safety factor. We strictly implement ISO 9001 standards to manage the entire supply chain to ensure that we can provide you with better Solid Rod Lifting Inserts and services.
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Fixing sockets with bent ends, also known as fixing inserts with bent ends, is essential for anchoring in precast concrete. These sockets provide robust points for fixing elements, featuring a bent design that enhances grip and stability.
Tubular Lifting Insert supplied by HULK Metal has passed CE certification. Tubular Lifting Insert can pass the 3 times safety factor tensile test, and each batch of goods has a comprehensive test report.
HULK Metal can provide you with RD and M standard 12-45 thread, SWL 0.5 to 8.0tons of Long Wavy Lifting Insert. Its international general standard is CE, which needs to pass the 3 times safety factor tensile force test.
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Flat End Lifting Socket
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Q345/20#/Stainless steel/Others
Galvanized/Black
8~52
≥3
Plate spread anchors from HULK Metal feature a welded steel plate and head design, embedded in concrete for edge lifting. Available in various sizes with galvanized options, they support loads up to 10 tons safely.
Unilateral erection anchors serve as specialized lifting inserts for precast concrete, designed for one-sided loading during element erection. They integrate with ring clutches and recess formers, providing stable anchor points that enhance safety and reduce panel stress in construction applications.
HULK Metal supplies flat foot anchors crafted from premium alloys for secure lifting in precast concrete projects worldwide.
HULK Metal stands as a reliable erection anchor supplier in China, delivering high-standard products for precast concrete lifting. Our anchors ensure secure handling with superior strength and corrosion resistance, backed by comprehensive production support for bulk orders.
HULK Metal supplies CE and ISO9001 certified spread anchors with reliable safety factors, faster delivery, and professional support. Choose our spread anchors for superior quality and complete precast lifting solutions.
HULK Metal delivers high-quality two-hole anchors, designed for secure lifting of precast concrete elements. Certified with CE and ISO 9001, our anchors ensure safety, durability, and efficiency.
HULK Metal's Precast Concrete Lifting Lugs, also known as Lifting Clutches or Lifting Eyes, are precision-engineered for heavy-duty lifting. Manufactured with high-strength materials, they ensure safety, durability, and efficiency in precast concrete lifting applications worldwide.
High-quality dog bone lifting eye with CE and ISO9001 certification. Strong, safe, and durable for precast concrete lifting. Shorter production cycle and faster delivery from trusted Chinese supplier HULK Metal.
HULK Metal supplies CE and ISO 9001 certified lifting clutch for pin anchor with 5 times safety factors, shorter production cycles, and complete after-sales support for global precast concrete projects.
Dog Bone Lifting Eye With Chain supplied by HULK Metal can pass the 5 times safety factor test and has been CE certified. We can provide 1.3 to 20 tons load groups.
Ring Clutch supplied by HULK Metal is CE certified and can pass the tensile test with a safety factor of 5. We have integrated a complete supply chain and formed a complete team to provide better products and services.
Precast Concrete Lifting Eyes supplied by HULK Metal has passed CE and ISO 9001 Certified and can passed 5 times safety factor testing. HULK Metal is an experienced manufacturer in China. Looking forward your inquire.
Q345/35CrMo/Others
Galvanized/Black/Powder-coat
1.3~32.0
≥5
Precision Casting
HULK Metal has a well-established supply chain to provide you with a full range of Clevis Slip Hooks, such as G43, G70, G80, CE marked, with latch or none, electro-galvanized, hot-dip galvanized or powder coated. We strictly implement ISO 9001 quality management and have a professional team to provide better services. We are committed to being your office in China, helping you with all aspects of your orders in China.
We have provided customers in more than 100 countries and regions around the world with Clevis Grab Hooks with strength standards such as G43 70 80 that can pass 2 to 4 Times Safety Factor detection.
HULK Metal is an experienced eye grab hooks supplier in China. We have integrated a complete supply chain and formed a professional team to provide better products and services. We can provide eye grab hooks with various specifications and surface treatments.
HULK Metal is an experienced supplier in China, providing Eye Slip Hooks in various materials, strengths, certifications, surface treatments and sizes. We have established a complete supply chain to ensure that raw materials, production and delivery are under control to provide higher quality and low-cost lifting hooks.
HULK Metal provides high-quality Rubber Recess Former for precast concrete lifting systems. They are used with Pin Anchor Recess Former and Spread Anchor Recess Former, ensuring precise recess shaping, shorter production cycles, and faster delivery.
HULK Metal supplies durable lifting pin anchor recess former for precast concrete elements, offering sizes from 1.3 to 32 tons with CE and ISO 9001 certification. Get shorter cycles and comprehensive support for bulk orders.
HULK Metal can provide a variety of precast magnetic formers. With higher quality and a more affordable price, it is your best choice.
The Spread Anchor Rubber Recess Former is made of durable rubber with a reinforced rear metal plate. It is designed for fixing spread anchors in precast concrete, ensuring accurate positioning, easy demolding, and reliable lifting performance.
As one of the excellent magnetic recess former suppliers in China, HULK Metal has advanced factories and perfect supply chain to provide you with high-quality products and services.
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.
HULK Metal's Electrical Box Fixed Magnets feature a durable rubber body combined with strong NdFeB magnets, ensuring reliable fixation of electrical boxes in precast concrete. These magnets are customizable in shape, size, and finish, providing flexibility for bulk orders.
Our Shuttering Magnets for Formwork are designed for precast concrete production, offering reusable and stable fixing solutions. They support different mold sizes and deliver better cost-efficiency for large-scale construction projects.
Our Embedded Corrugated Pipe Fixed Magnet combines premium steel housing with powerful magnets to ensure strong fixation during precast concrete production. It reduces installation time, improves efficiency, and provides consistent performance across different applications, helping customers achieve safer and more reliable concrete elements.
Cast In Channel T Bolts from HULK Metal are precision-forged using high-performance alloy steel or stainless steel. Surface treatments, including electro-galvanizing or hot-dip galvanizing, enhance rust resistance, making them reliable for precast concrete connections in construction and infrastructure projects.
HALFEN Anchor Channels from HULK Metal offer superior quality, CE and ISO certified standards, and five times safety factor. Our fast production and delivery, combined with professional after-sales support, make bulk purchasing simple and reliable.
Name Wire Loop Box Precast Concrete Accessories
Molds Full Range Moulds
Materials Wire Rope / Steel Plate / Customized
SL(mm)±10 60 / 80 / 100 / 120 /140
Our Cast in Channel offers superior strength, certified safety, and flexible application for precast construction. Manufactured with advanced processes, it guarantees durability, easier installation, and faster delivery. HULK Metal supports bulk buyers with full technical service and reliable after-sales support.
Our concrete screw bolts are designed for reliable installation without expansion anchors. Galvanized concrete screws provide superior corrosion resistance, making them ideal for indoor and outdoor use. HULK Metal offers diverse sizes, surface treatments, and customized solutions to match your needs.
Q345/20#/Stainless steel/Others
Galvanized
0.8~25.0
6~32
≥3
HULK Metal lifting loops are made from alloy or carbon steel, precision-threaded, and electro-galvanized for corrosion resistance. Designed for use with lifting sockets, they ensure safe, reliable handling of precast concrete components with a ≥4 safety factor.
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.
Room 901, Intelligent Park A Building, No. 86 ChunYang Rd, Qingdao, China 266109
© 2025 HULK Metal All Rights Reserved. All Rights Reserved.
