S235 ASTM A500 Large Diameter SHS RHS Square and Rectangular Steel Pipe
S235 ASTM A500 Large Diameter SHS RHS Square and Rectangular Steel Pipe
Large Diameter
FOB/CIF
1twenty - foot container
800000 tonstwenty - foot container
Tianjin, China
40Day
Youfa's large diameter square and rectangular steel pipe in ASTM A500 / S235 grade is designed to provide excellent strength, durability, and dimensional precision for structural applications.
Quantity
Product Introduction of Square and Rectangular Steel Pipe
Youfa's large diameter square and rectangular steel pipe in ASTM A500 / S235 grade is designed to provide excellent strength, durability, and dimensional precision for structural applications. With a black surface finish, this pipe combines structural performance with a clean appearance, making it ideal for a variety of applications.
The ASTM A500 rectangular steel tube offers uniform mechanical properties and superior weldability, ensuring reliable performance in steel structures, machinery fabrication, and industrial frameworks. Compared with coated or galvanized types, the black square and rectangular steel pipe features a natural oxide layer that allows easy welding and smooth surface finishing.
Available in multiple sizes, this product is suitable for large-scale structural projects such as warehouses, bridges, and workshop buildings. Produced on advanced lines with strict quality control, it meets international standards and can be tailored to specific project requirements.
Product Description of Square and Rectangular Steel Pipe
| Category | Specification |
|---|---|
| Outer Diameter (OD) | Square Pipe: 20×20mm to 400×400mm Rectangular Pipe: 20×40mm to 300×500mm |
| Wall Thickness | 0.8mm to 20mm |
| Length | 3m to 12m (customizable as per client requirements) |
| Standards | ASTM A500, EN 10219, EN 10210, JIS G 3466, GB/T 6728 |
| Material Grades | American Standard: Gr.A, Gr.B, Gr.C European Standard: S235, S275, S355 Japanese Standard: A36, SS400 Chinese Standard: Q195, Q235, Q345 |
| Certification | ISO 9001:2008, SGS, BV, CCIC, etc. |
| Surface Finish Options | Hot-dip Galvanized: Zinc coating 220-260g/m² Pre-Galvanized: Zinc coating 30-150g/m² Painted Finish: Black paint or varnish lacquer Oiled Surface: Light oil coating to prevent rust Bare Pipe: No additional coating |
| Pipe Ends | Plain end / Beveled end Grooved end Flange joint Threaded ends (one end with coupling, one end with plastic cap) |
| Marking | As per client requirements or mill standard Spray white paint for identification |
| Packing | OD ≥ 273mm: Loose packing, piece by piece OD< 273mm: Bundled in hexagonal seaworthy packages, secured with steel strips Nested Packing: Small sizes nested into larger sizes |
| Applications | Construction & Structural Steel Pipe Steel Framework & Building Materials Scaffolding Pipes Fence Posts & Guardrail Pipes Fire Protection Pipes Greenhouse Steel Tubing Water, Gas, Oil & Low-Pressure Liquid Pipes Irrigation & Agricultural Pipes Handrail Pipes |
| Manufacturing Process | ERW (Electric Resistance Welded) / High-Frequency Welded |
| Trade Terms | FOB, CFR, CIF, EXW, FCA |
| Payment Terms | T/T (Telegraphic Transfer), L/C (Letter of Credit) |
| Delivery Time | 15-45 days (depending on order quantity and payment confirmation) |
| Main Export Markets | Southeast Asia, South Asia, Middle East, Europe South America, Central America, Africa, Oceania |
Product Specification of Square and Rectangular Steel Pipe
| Square Hollow Section (SHS) (mm) | Rectangular Hollow Section (RHS) (mm) | Wall Thickness (WT) (mm) |
|---|---|---|
| 20×20 | — | 1.7 - 2.75 |
| 25×25 | — | 1.2 - 3.0 |
| 30×30 | 20×40, 30×40 | 1.2 - 3.75 |
| 40×40, 50×50 | 30×50, 25×50, 30×60, 40×60 | 1.2 - 4.75 |
| 60×60 | 50×70, 40×80, 40×50 | 1.2 - 5.75 |
| 70×70 | 60×80, 50×80, 100×40 | 1.5 - 5.75 |
| 80×80, 75×75, 90×90 | 60×100, 50×100, 120×60, 100×80 | 1.5 - 8.0 |
| 100×100 | 120×80 | 1.7 - 8.0 |
| 120×120 | 160×80, 100×150, 140×80 | 2.5 - 10.0 |
| 140×140, 150×150 | 100×180, 200×100 | 2.5 - 10.0 |
| 160×160, 180×180 | 200×150 | 3.5 - 12.0 |
| 200×200 | 250×150 | 3.5 - 12.0 |
| 250×250 | 250×200, 300×200 | 4.5 - 15.75 |
| 300×300, 400×200 | 350×200, 350×250 | 4.5 - 15.75 |
| 350×350, 350×300 | 450×250, 400×300, 500×200 | 4.5 - 15.75 |
| 400×400, 280×280, 450×300, 450×200 | 400×350, 400×250, 500×250, 500×300, 400×600 | 4.5 - 20.0 |
Product Show of Square and Rectangular Steel Pipe
Applications of Large Diameter Square and Rectangular Steel Pipe
The large diameter square steel pipe is widely used in construction, infrastructure, and industrial projects that require both strength and precision. Its square and rectangular shapes provide excellent load-bearing capacity and design flexibility, making it suitable for various structural frameworks.
Typical applications include steel structures, bridges, warehouses, workshop buildings, and machinery manufacturing. The ASTM A500 rectangular steel tube is also ideal for fabrications where tight dimensional tolerance and smooth surfaces are required, such as architectural support systems and heavy equipment frames.
Its black surface finish allows easy welding, cutting, and coating according to project needs.
Advantages of Large Diameter Square and Rectangular Steel Pipe
High Strength and Stability
Manufactured from quality S235 or ASTM A500 grade material, this black square and rectangular steel pipe ensures excellent load resistance and long-term structural reliability.
Excellent Weldability and Fabrication Performance
The natural black oxide surface offers good weldability and easy processing without the need for additional surface preparation.
Precise Dimensions and Clean Surface
Produced through advanced forming and welding processes, each ASTM A500 rectangular steel tube features accurate sizing, smooth edges, and consistent wall thickness.
Wide Range of Sizes and Applications
Available in various diameters and thicknesses to suit large-scale structural frameworks, commercial buildings, and mechanical fabrication projects.
FAQ
1. What is the difference between black and galvanized square steel pipes?
The black square and rectangular steel pipe has a natural oxide layer formed during manufacturing, providing a smooth and weldable surface. In contrast, galvanized pipes are coated with zinc for enhanced corrosion resistance.
2. What are the advantages of ASTM A500 / S235 materials?
Both ASTM A500 and S235 grades provide excellent strength, toughness, and weldability. These materials are ideal for structural applications that require reliable mechanical properties and consistent performance.
3. Can I customize the size of large diameter square steel pipes?
Yes. We can produce large diameter square steel pipes and ASTM A500 rectangular steel tubes in customized dimensions and thicknesses according to your project requirements.
4. What surface finishes are available?
Besides the standard black surface, we also supply pre-galvanized and hot-dip galvanized options for enhanced corrosion protection.
