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RUEach flange undergoes precise dimensional measurement to ensure compatibility with pipe sizes. This guarantees accurate fitting, structural stability, and compliance with international manufacturing standards.
1. Higher Standard Certification
2. Perfect Production Solution
3. More Corrosion Resistant
4. Comprehensive After Service
5. Wide-ranging Application
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 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.
| Pipe Info | |||
 | |||
| Material | Carbon Steel | ||
| Surface | Hot Galvanized / Powder Coating | ||
| Color | Refer To Pantone Color Card | ||
| Pipe Sizes Comparison | |||
| Size | Inner Diameter | Outer Diameter | |
| Nominal (DN) | in | mm | |
| T | 15 | 1/2" | 21.3 |
| A | 20 | 3/4" | 26.9 |
| B | 25 | 1" | 33.7 |
| C | 32 | 5/4" | 42.4 |
| D | 40 | 3/2" | 48.3 |
| E | 50 | 2" | 60.3 |
| Color only refers to the color of the powder coating. The powder coating of the pipe will allow for color tolerance, Kindly contact us for details. The quality of the tube will meet the usage requirements in most scenarios. For special scenarios, Kindly contact us for performance testing. | |||
| Basic Info Table of Fittings | |||||||||||
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| Name | 252Z Slope Railing Base Flange | ||||||||||
| 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 |
| D | 40 | 3/2" | 48.3 | HM-G-252Z-D | HM-D-252Z-D | HM-PC-252Z-D | HM-B-252Z-D | 127 | 165 | 92 | 88 |
The slope railing base flange structural pipe fitting is specially designed to connect inclined uprights securely to the ground. With adjustable angles, it ensures safe and stable installation in railing systems, guardrails, and protective barriers. Manufactured with durable cast iron, stainless steel, or aluminum, and treated with advanced surface finishing, these fittings meet international standards. HULK Metal provides higher quality, competitive pricing, and excellent service to meet your structural application needs.
The slope railing base flange structural pipe fitting is a specialized component designed to secure inclined uprights to the ground while maintaining a stable angle of 0–11°. Compared to the standard 132 railing base flange, this fitting allows for installation flexibility on sloped or uneven surfaces, making it ideal for roof guardrail systems and inclined handrail projects.
Its structure is engineered for durability and reliability. The base is elongated, featuring two holes at both ends for strong ground fixation. The sleeve opening is circular, and the connection area between the sleeve and the base is widened to allow slight angle adjustments of the inserted pipes. For added stability, the sleeve is equipped with two internal hexagon set screws, ensuring the pipe remains securely in place even under pressure.
This design makes the slope railing base flange highly adaptable for safety railing, fencing, and industrial protective barriers. It not only enhances installation efficiency but also ensures compliance with safety regulations in various applications. Whether used in construction sites, commercial spaces, or DIY structures, it provides a safe, reliable, and versatile solution for connecting sloped railings.
HULK Metal offers slope railing base flange pipe fittings in cast iron, stainless steel, and aluminum, produced with advanced casting technologies.
Cast iron slope railing base flanges are manufactured using sand casting, ensuring high strength and excellent durability. They are widely used in heavy-duty railing and guardrail systems, offering reliable structural performance at an economical cost, especially for large-scale projects.
Stainless steel slope railing base flanges are produced using precision investment casting. They deliver excellent corrosion resistance, aesthetic appeal, and long-term reliability, making them ideal for projects requiring premium quality, such as modern architecture, marine environments, and outdoor railing systems.
Aluminum slope railing base flanges are manufactured with die casting technology, offering lightweight performance with good strength. They are resistant to rust and suitable for applications where weight reduction is essential, such as portable structures, temporary fencing, or custom DIY projects.
Various surface treatments enhance corrosion resistance, durability, and appearance, ensuring the flange fits diverse environments and long-term applications.
Hot-dip galvanizing provides a thick zinc coating, offering superior corrosion protection against outdoor weather conditions, moisture, and harsh industrial environments. This treatment ensures long-lasting durability, making it ideal for railing systems, fencing, and guardrails exposed to outdoor elements. It is widely chosen for projects requiring strong anti-rust performance and extended service life.
Double-coating galvanizing enhances anti-corrosion performance by applying two protective zinc layers. This surface treatment increases durability, especially in high-humidity or highly corrosive environments such as coastal areas. It provides better wear resistance, longer protection, and a smoother appearance, ensuring reliability and strength for slope railing base flanges used in challenging environments.
Powder coating offers a wide selection of colors based on Pantone standards, allowing for both protection and decorative purposes. The coating provides excellent resistance to scratches, weathering, and UV exposure, making it suitable for commercial, residential, or decorative railing projects. It ensures both corrosion protection and an attractive finish that complements architectural aesthetics.
Handrails, fences, and guardrails
DIY structures and customized railing systems
Ensure the pipe outer diameter matches the inner diameter of the slope railing base flange.
Select surface treatment suitable for the application environment.
Confirm compliance with local railing installation standards.
A: We operate a fully equipped quality inspection center with rigorous testing procedures and a complete quality assurance system. Every product undergoes strict dimensional, performance, and surface treatment checks to guarantee consistent high quality for your project needs.
A: Our prices are based on high-quality standards. With the same quality, our price is more competitive. For larger order quantities, you will benefit from more favorable pricing. Contact our team for a detailed quotation tailored to your needs.
A: The minimum order quantity depends on the product model and material. For standard models, MOQ is relatively low, while customized products may require larger quantities. Please contact us directly for accurate MOQ details and personalized ordering options.
A: Delivery time depends on your specific order requirements. Generally, production takes around 30 days. For larger orders, efficiency improves with planned production schedules. In most cases, delivery will not exceed 45 days, ensuring reliability for your projects.
A: We provide hot-dip galvanizing, double-coating galvanizing, and powder coating in customized Pantone colors. Powder coating requires MOQ for special colors. All treatments are applied under strict quality control to ensure enhanced corrosion resistance and aesthetic value.
A: We supply slope railing base flange fittings to more than 50 countries across Europe, North America, South America, Africa, and Southeast Asia. Our global logistics network ensures efficient shipping and delivery to meet international client requirements.
A: We can produce structural pipe fittings in cast iron, stainless steel, and aluminum. Currently, we have complete mold sets for cast iron. Other materials require new mold development and OEM services for custom production.
A: We offer multiple sizes including DN25 (33.7mm), DN32 (42.4mm), and DN40 (48.3mm). Each size has corresponding surface treatment codes. Custom sizes can also be produced according to your specific project requirements.
A: Evaluate the supplier's production capacity, certifications, surface treatment quality, and after-sales service. Ensure they provide full technical support, stable supply, and compliance with international safety standards. Choosing an experienced manufacturer like HULK Metal helps you reduce risks.
A: We support multiple payment methods such as T/T and L/C. Delivery terms include FOB, CIF, and EXW. Flexible solutions are available to suit your business needs, ensuring smooth transactions and reliable order fulfillment.
HULK Metal implements a strict quality control system throughout the entire production process of slope railing base flange structural pipe fittings. From raw material selection to final packaging, every stage is carefully monitored. Our advanced inspection equipment and experienced QC team ensure dimensional accuracy, surface treatment consistency, and overall durability. With comprehensive quality checks, we guarantee that each product meets international standards and provides reliable performance for your projects.
Each flange undergoes precise dimensional measurement to ensure compatibility with pipe sizes. This guarantees accurate fitting, structural stability, and compliance with international manufacturing standards.
Before shipping, products are checked for surface treatment quality, strength, and overall appearance. Only qualified products are packaged and prepared for delivery to clients worldwide.
We conduct simulated installation and load-bearing tests to verify functionality and safety. This ensures the flange performs reliably in railing, fencing, and guardrail applications.
Our QC team verifies order quantities against packing lists. This prevents shortages or overages and ensures accurate, efficient delivery for every client order.
HULK Metal operates a modern factory equipped with advanced casting, machining, and surface treatment facilities for slope railing base flange structural pipe fittings. With strict production management and ISO9001 standards, we ensure efficiency, precision, and high output capacity. From casting to final finishing, every stage is carefully monitored. Our professional QC center and experienced technical team guarantee that each product meets global quality and safety requirements.
Choosing HULK Metal means working with a trusted manufacturer that provides higher-standard slope railing base flange pipe fittings. We combine ISO9001-certified production, strict QC systems, and advanced surface treatments to ensure reliable performance. Our efficient production planning shortens lead times, while strong logistics support guarantees timely delivery. With competitive pricing, better corrosion resistance, and comprehensive after-sales service, HULK Metal is your dependable partner for structural pipe fitting solutions worldwide.
Here you will find related articles about slope railing base flange structural pipe fittings, including detailed product guides, installation tips, and surface treatment comparisons. Each article provides useful insights into applications, material options, and technical standards, helping you better understand the advantages of different fittings. These resources are designed to support your purchasing decisions and project planning, offering practical knowledge to ensure safe, efficient, and cost-effective railing system installations.
In addition to slope railing base flanges, HULK Metal manufactures a wide range of structural pipe fittings to meet different construction needs. Our product line includes railing base flanges, swivel flanges, elbow fittings, tee fittings, and cross fittings. Each fitting is produced under strict quality control with multiple surface finish options. These fittings are suitable for handrails, fences, guardrails, scaffolding, and DIY projects, providing flexible, durable, and cost-effective solutions for global customers.
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.
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
0~11
TUBE SIZE(mm)
33.7
42.4
48.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
0~11
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
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
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
42.4/48.3
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
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)
33.7
42.4
48.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
42.4/33.7
42.4/48.3
48.3/42.4
603/48.3
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
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)
48.3
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
30~60
TUBE SIZE(mm)
26.9
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
60.3
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
15~70
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
Customizable
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
0~45
TUBE SIZE(mm)
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)
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
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
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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