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RUAll fittings undergo precise dimensional checks with advanced measuring tools to ensure accurate socket size, base hole alignment, and overall fitting compatibility for seamless assembly in railing and structural systems.
1.ISO 9001 Certified
2.Better Prices
3.Various Surface Treatments Available
4.Comprehensive After Service
5.Get Goods Faster
HULK Metal supplies base flange structural pipe fittings made of durable materials with multiple surface finishes. They are designed for stronger pipe connections and longer service life. Our modern factory, professional team, and strict inspection ensure higher-standard products for your projects.
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.
| Basic Info Table of Fittings | |||||||||||
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| Name | Base Flange Structural Pipe Fitting | ||||||||||
| Material | Malleable Iron / Ductile Iron | ||||||||||
| Surface | Hot-dip Galvanized / Double Galvanized / Powder Coating / Raw Black | ||||||||||
| Color | Refer To Pantone Color Card | ||||||||||
| Pipe Sizes Comparison | Surface Finishing & Code | Dimensions(mm) | |||||||||
| Size | DN | in | mm | Hot-dip Galvanized | Double Galvanized | Powder Coating | Raw Black | a | b | C | D |
| T | 15 | 1/2" | 21.3 | HM-G-131-T | HM-D-131-T | HM-PC-131-T | HM-B-131-T | 32 | 74 | 55.5 | |
| A | 20 | 3/4" | 26.9 | HM-G-131-A | HM-D-131-A | HM-PC-131-A | HM-B-131-A | 42 | 83 | 57 | |
| B | 25 | 1" | 33.7 | HM-G-131-B | HM-D-131-B | HM-PC-131-B | HM-B-131-B | 48 | 89 | 65 | |
| C | 32 | 5/4" | 42.4 | HM-G-131-C | HM-D-131-C | HM-PC-131-C | HM-B-131-C | 50 | 102 | 76 | |
| D | 40 | 3/2" | 48.3 | HM-G-131-D | HM-D-131-D | HM-PC-131-D | HM-B-131-D | 59 | 114 | 88.5 | |
| E | 50 | 2" | 60.3 | HM-G-131-E | HM-D-131-E | HM-PC-131-E | HM-B-131-E | 64 | 127 | 95 | |
Base flange structural pipe fittings are designed to provide a secure end connection for handrails, guardrails, and various DIY structures. Their compact sockets fix pipes firmly without supporting the entire system, making them ideal for end mounting points. Produced by precision casting with strict quality control, they can be applied in both indoor and outdoor projects. Different materials and surface finishes ensure longer service life and better adaptability to multiple environments.
A base flange structural pipe fitting is a widely used component in railing and handrail systems. It is designed to be mounted onto walls or floors and provide a fixed socket for the end of a pipe. The socket is relatively short, so it cannot serve as a full support for the entire structure. Instead, it is mainly used at termination points or as an anchor point for the connected pipe.
Structurally, this fitting is produced by casting, ensuring higher strength and durability. The base is usually flat and has four pre-drilled holes, making it easier to fasten with screws, bolts, or anchors depending on the surface. On the socket, there is a built-in hexagon screw that allows the inserted pipe to be securely tightened, preventing unwanted movement or loosening.
Base flange fittings are versatile and can be applied in residential, commercial, or industrial projects. For instance, they can be used to mount railing ends on balconies, staircases, or walkways, and also in custom-made DIY structures such as furniture or playground installations. When combined with other structural pipe fittings, they help create safe, reliable, and long-lasting pipe systems.
Base flange structural pipe fittings can be manufactured in different materials, offering various strengths, corrosion resistance, and suitable applications.
Cast iron base flanges are produced by sand casting, offering excellent strength and cost-effectiveness. They are suitable for heavy-duty handrails, guardrails, and construction projects. With proper galvanizing or coating, cast iron fittings can resist corrosion in outdoor environments.
Stainless steel base flanges are produced by investment casting, providing superior corrosion resistance and a polished appearance. They are widely used in modern architectural projects, indoor applications, and environments requiring higher hygiene standards. Stainless steel fittings also offer longer service life with less maintenance.
Aluminum base flanges are produced by die casting, making them lightweight yet strong. They are an ideal option for indoor furniture, DIY structures, or decorative projects. With powder coating or anodizing, aluminum fittings deliver enhanced durability and aesthetic flexibility, suitable for various modern applications.
Different surface treatments improve corrosion resistance, appearance, and adaptability, allowing base flange fittings to perform better in specific environments.
Hot-dip galvanizing forms a thick zinc layer on the surface, offering excellent resistance to rust and abrasion. This treatment is especially suitable for outdoor structures exposed to moisture, rain, or harsh conditions. Base flange fittings with this coating are widely used in guardrails, construction projects, and industrial applications where durability and long-term protection are essential.
Double-coating galvanizing enhances the anti-corrosion effect by adding a secondary protective layer, making the surface even more durable. It offers a smoother finish and better protection in coastal or industrial areas with higher humidity and chemical exposure. This treatment helps structural pipe fittings maintain their performance and appearance for a longer period, reducing the need for frequent maintenance.
Powder coating provides a uniform, colorful, and durable surface finish that not only resists corrosion but also improves aesthetics. It is especially suitable for indoor handrails, decorative furniture, and DIY projects. The finish is available in different colors according to the Pantone card, offering greater flexibility for designers and project owners. Powder-coated base flange fittings combine practicality with visual appeal.
Indoor playground roof fixing points
End connection points of handrails
Connection points for DIY tubular structures
Support feet for DIY tables and chairs
A: We ensure quality with a fully equipped inspection center, advanced testing instruments, and strict procedures. Every batch undergoes dimensional, strength, and appearance checks, guaranteeing each base flange structural pipe fitting meets international standards before delivery to our customers worldwide.
A: Our prices are always based on high-quality standards. Compared with suppliers of the same quality, our price is more competitive. Larger orders will enjoy even better discounts, helping you reduce costs and improve purchasing efficiency without sacrificing quality.
A: The minimum order quantity depends on the product model and material. Some standard sizes are available with smaller MOQs, while customized finishes may require higher volumes. Please contact our sales team anytime to receive a detailed quotation for your project.
A: The delivery cycle usually takes about 30 days, depending on order volume and customization requirements. Larger orders improve production efficiency. In most cases, lead time will not exceed 45 days. We also provide progress updates throughout manufacturing.
A: We provide hot-dip galvanizing, double-coating galvanizing, and powder coating. Custom colors for powder coating are available with minimum order requirements. Each treatment is carefully applied to improve durability, appearance, and corrosion resistance, ensuring suitability for indoor or outdoor applications.
A: We have long-term partnerships with clients in over 50 countries across Europe, North America, South America, Africa, and Southeast Asia. Our logistics team ensures safe and efficient shipping, helping global customers receive their orders quickly and reliably.
A: We can produce structural pipe fittings in cast iron, stainless steel, and aluminum. For cast iron, we have a complete mold set available. Other materials require mold making for OEM services, providing customers with flexible manufacturing solutions.
A: We offer a wide range of base flange sizes from 1/2 inch to 2 inches. Each size comes with different codes and dimensions, allowing better compatibility with pipe systems. Custom specifications are also available to meet project-specific requirements.
A: Pay attention to supplier qualifications, production capacity, and quality inspection systems. Ensure they provide surface treatments suitable for your environment and meet international standards. Reliable suppliers like HULK Metal also offer customization, after-sales service, and stronger delivery assurance.
A: We support flexible payment methods such as T/T and L/C, and delivery terms including FOB, CIF, and DDP. Our finance and logistics teams will work closely with you to find the most convenient and cost-effective solution for your order.
HULK Metal enforces strict quality control throughout the entire production process of base flange structural pipe fittings. From raw material testing to final inspection, every stage follows international standards. Our dedicated QC team ensures accurate dimensions, proper surface finishes, and reliable performance. Each order is carefully examined before shipment, giving customers confidence in receiving fittings that meet higher requirements and deliver consistent durability for structural and handrail applications worldwide.
All fittings undergo precise dimensional checks with advanced measuring tools to ensure accurate socket size, base hole alignment, and overall fitting compatibility for seamless assembly in railing and structural systems.
Each shipment is carefully inspected for appearance, coating thickness, and packaging. Only fittings that meet HULK Metal’s higher standards are approved, ensuring defect-free delivery to customers worldwide.
Orders are counted multiple times before shipment. Our team ensures the exact quantity matches purchase requirements, avoiding shortages and guaranteeing customers receive sufficient fittings for their projects.
Base flanges are tested for tightening performance and stability, ensuring the screws lock pipes securely. This guarantees safe and reliable connections, preventing looseness during long-term use in practical projects.
HULK Metal has a modern factory system covering casting, machining, surface treatment, and inspection for base flange structural pipe fittings. We integrate advanced production equipment with a professional workforce to deliver consistent quality and higher-standard products. Our strict adherence to ISO9001 ensures stable output and reliable performance. Combined with strong after-service support, our factory can meet bulk orders on time while maintaining superior durability and precision in every fitting.
Choosing HULK Metal means working with a trusted manufacturer offering certified base flange structural pipe fittings with superior durability and precision. Our factory strictly follows ISO9001 standards, supported by advanced equipment and skilled engineers to deliver higher-standard products. With stronger surface treatments, reliable quality inspections, and comprehensive after-service, we provide better solutions for bulk buyers worldwide. HULK Metal helps you achieve safer, more efficient, and cost-effective structural and railing projects.
In this section, you can find related articles about base flange structural pipe fittings and other connection components. These articles provide insights into product features, installation tips, surface treatment comparisons, and project applications. They help buyers understand how to select suitable fittings and optimize their railing or structural systems. By reading these resources, you gain practical knowledge to improve project safety, efficiency, and design flexibility while deepening your understanding of HULK Metal’s manufacturing expertise.
Besides base flange structural pipe fittings, HULK Metal also manufactures a wide range of related products, such as handrail brackets, elbow fittings, tee fittings, railing base flanges, and wall-mounted supports. Each fitting is produced with the same strict quality control and advanced surface treatments, ensuring better performance and durability. By offering a complete set of structural pipe fittings, we help customers build safer, more flexible, and long-lasting railing and tubular systems tailored to different applications.
Our handrail bracket structural pipe fittings have multi-type surface treatments to prevent corrosion, precise dimensions, and a strong load-bearing capacity. They provide a longer service life and a more secure installation, making them perfect for outdoor safety rails, balconies, and staircases.
The Internal Swivel Tee Structural Pipe Fitting allows a 360 deg rotation around the connection point, making it ideal for angled rail systems. Manufactured from malleable iron or ductile iron with multiple finish options, it provides stronger performance and longer service life.
The Three Socket Angle Tee Structural Pipe Fitting is an essential component for angled guardrails and handrails. It connects two top rails to an upright post with adjustable angles from 0 to 11 degrees, ensuring both safety and flexibility.
The Slope Short Tee is specially designed for guardrail and handrail systems with slopes from 0 to 11 degrees. Its internal socket allows for the precise adjustment and secure fixing of uprights using hex bolts.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
Customizable
HULK Metal supplies base flange structural pipe fittings made of durable materials with multiple surface finishes. They are designed for stronger pipe connections and longer service life. Our modern factory, professional team, and strict inspection ensure higher-standard products for your projects.
HULK Metal manufactures high-standard railing base flange structural pipe fittings with ISO 9001 certification. Our fittings feature precise dimensions, reliable strength, and multiple surface treatments, ensuring durability and excellent performance in both indoor and outdoor applications for handrail and guardrail systems.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
33.7/26.9
Customizable
The Swivel Base Flange is engineered to secure pipes to walls with adjustable angles from 0° to 180°. Its modular design ensures easy assembly, reliable stability, and compatibility with multiple pipe sizes and materials.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
33.7
42.4
48.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
48.3/42.4
60.3
21.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
21.3
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
21.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
21.3
Customizable
HULK Metal's Clamp on Tee Structural Pipe Fittings are engineered for secure, easy installation on existing systems. Made from high-quality malleable or ductile iron, they support durable, stable connections for guardrails, handrails, and DIY structures.
Two Socket Cross Structural Pipe Fittings are designed to connect upright pipes with two perpendicular pipes in the same plane. Manufactured from high-quality cast iron, stainless steel, or aluminum, these fittings undergo strict inspection and advanced surface treatment
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
Customizable
HULK Metal manufactures high-quality Three Socket Tee (Long Tee) Structural Pipe Fittings that combine strength, precision, and reliability. Made from malleable or ductile iron with customizable finishes such as galvanizing or powder coating, these fittings are ideal for both industrial and DIY applications.
The side outlet elbow, also called a 3-way elbow, is designed to connect three pipes at 90° angles. It provides strength and stability in guardrails, handrails, and cube-like structures.
HULK Metal's Variable Swivel Elbow is engineered for versatile pipe-joining applications. With angles ranging from 73° to 287°, it provides maximum flexibility for complex structures.
HULK Metal's Reducing Short Tee Structural Pipe Fitting is engineered to provide a secure vertical pipe connection with different diameters, ideal for mid-rails or guardrail top rails.
The Single Socket Tee Structural Pipe Fitting, also known as Short Tee, is widely used in railing systems, guardrails, and DIY structures. It allows one pipe to connect securely at a right angle to another, forming a stable "T" connection.
The Single Lugged Bracket Structural Pipe Fitting is a reliable solution for fixing pipes onto walls or panels where limited space prevents double lug use.
The Vertical Railing Side Support Structural Pipe Fitting is designed to provide strong and stable support for railing systems. Manufactured with malleable iron or ductile iron, and available in multiple surface treatments such as hot-dip galvanizing or powder coating, these fittings ensure long-term durability.
The Cradle Clamp Structural Pipe Fitting is designed to fasten pipe rails securely to uprights. Its open clamp structure allows quick installation, while inner hex bolts ensure reliable stability.
Horizontal Railing Side Support Structural Pipe Fittings are designed to fasten railing uprights firmly against walls or side structures.
The Adjustable Short Tee is engineered to connect pipes at variable angles from 30 deg to 60 deg. Its durable structure, simple installation, and flexible design make it suitable for guardrail and handrail systems.
The Single Swivel Combination is formed by joining two swivel fittings, making it ideal for environments requiring flexible angle adjustments. While it cannot independently bear lateral loads, it becomes effective when used together with other fittings.
The Add on Short Tee Structural Pipe Fitting is a hinged socket fitting that allows vertical connections to existing pipe systems without dismantling.
HULK Metal Variable Elbow Structural Pipe Fitting is designed to create secure and adjustable angled connections between pipes. With a strong structure and reliable locking bolts, it delivers stability and precision.
HULK Metal Adjustable Angle Two Socket Cross Structural Pipe Fitting provides a strong and flexible connection between uprights and rails. Designed for rail systems with slopes from 45° to 90°, it is widely used in stairways, handrails, and ramps.
The Galv Ground Socket Structural Pipe Fitting is designed to provide secure support for uprights in diverse ground conditions. Made of high-strength malleable or ductile iron, it ensures long-term stability and durability.
The Side Palm Fixing Structural Pipe Fitting is engineered to provide a solid and secure connection for railing uprights against walls, stairs, or ramps. Its three-lug design with reinforced sockets improves stability and load capacity.
The Double Lugged Bracket Structural Pipe Fitting is engineered to mount pipes flush against flat walls or panels. Featuring two lugs with fixing holes, it supports various screw or chemical fixing methods. Its socket with hex bolts firmly secures the pipe in place.
The Double Male Swivel Structural Pipe Fitting is designed for flexible joint connections and works seamlessly with single swivel female parts to form a stable structure.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
Customizable
Hook structural pipe fittings provide temporary mounting points on pipes. Designed for horizontal and vertical installation, they ensure user safety with rounded heads and secure locking via hex bolts. This solution is suitable only for incomplete systems.
The slope railing base flange pipe fitting is designed to secure inclined uprights to the ground with adjustable angles. Manufactured with strict quality control, it offers multiple surface treatments, ensuring strength, corrosion resistance, and suitability for diverse railing and structural applications.
Our gate hinge pipe fittings combine robust materials with precision casting to create dependable connections for gates. With multiple surface treatments and sizes available, they meet diverse installation requirements, deliver excellent corrosion resistance, and provide a secure, smooth rotational function.
Gate Eye Pipe Fittings provide a reliable hinge connection for gates and handrail systems. Made from strong cast iron or flexible ductile iron, they come with different surface finishes, providing great performance, a longer lifespan, and making them suitable for many construction and industrial uses.
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.
119 Galvanized Safety Railing Fittings Two Socket Cross is used to add two pipes on the same plane to form a cross structure for a specific position of a pipe.
116A Galvanized Pipe Guardrail Fittings Add On Side-outlet Tee is used to add two perpendicular rails to an already assembled handrail or guardrail uprights, or to add two perpendicular pipes to an assembled DIY structure such as a cube or cuboid.
101 Reducing Short Tee Galvanized Pipe Railing Fittings are often used. HULK Metal is a well-known supplier in China. We look forward to your inquiry.
No. 101 galvanized pipe handrail fittings are used to connect two pipes into a "T" shape. It is also called Short Tee. One pipe is inserted into the socket and the other one passes through the channel above.
104 galvanized slip-on pipe fittings long tee can be used to add two horizontal pipes to the guardrail or handrail uprights, or to connect two pipes in a DIY structure and add a vertical pipe to them.
104 galvanized slip-on pipe fittings long tee can be used to add two horizontal pipes to the guardrail or handrail uprights, or to connect two pipes in a DIY structure and add a vertical pipe to them.
Safety rail fittings are slip-on pipe fittings for safety railings. They can be quickly installed to complete a system, are easy to operate, and have a longer life and better performance. The 125R reducing 90-degree elbow is a special and uncommon fitting used to connect two pipes of different thicknesses.
We can provide 21.3 mm to 60.3 mm size, that is, 1/2" to 2". We have a full range of molds, can complete each order faster.
124 type Galvanized Key Clamp Fitting uses 3 types of hot-dip galvanizing, double coating, and powder coating. We can provide 33.7mm, 42.4mm and 48.3mm diameters. We integrate a complete supply chain and a professional team to provide better products and services. Looking forward to your inquiry.
123 Type Galvanized Railing Fittings is a kind of elbow that can connect two pipes with an angle of 40° to 70°. We can provide two calibers: 42.4mm and 48.3mm. We will strictly implement ISO9001 to manage the supply chain and provide better products and services.
We integrated a complete supply chain, passed ISO 9001 certification, formed a professional technical team and produced a full range models of the galvanized pipe connector fittings to provide the best services and products. Looking forward your inquiry.
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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