Large Diameter Square and Rectangular Pipes Basic Data
| Product | Square and Rectangular Steel Pipe | |
| Material | Carbon Steel | |
| Grade | Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q355 = S355JR / A500 Grade B Grade C |
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| Standard | DIN 2440, ISO 65, EN10219, GB/T 6728, JIS 3466, ASTM A53, A500, A36 |
|
| Surface | Bare/Natural Black
Painted Oiled with or without wrapped |
|
| Ends | Plain ends | |
| Specification | OD: 20*20-500*500mm ; 20*40-300*500mm
Thickness: 1.0-30.0mm Length: 2-12m |
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Large Size Square and Rectangular Steel Pipes Application:
Construction / building materials steel pipe, Bridge structure steel pipe
Machine manufacturing structure pipe
Large diameter square and rectangular steel pipes play a crucial role in providing structural support for infrastructure, construction, and industrial applications.
Large Diameter Square and Rectangular Hollow Section Manufacture Process
The direct square forming process involves bending the strip steel from the first unit, and through step-by-step extrusion and bending, the basic shape of the product is formed before welding. This process is commonly used in the production of square and rectangular steel pipes to meet specific structural and design requirements. The direct square forming process requires specialized equipment and technology to ensure the dimensional accuracy and structural strength of the products.
Strict Quality Control:
1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK. We own UL /FM, ISO9001/18001, FPC, CE certificates
Youfa Square and Rectangular Steel Pipe Factories
Tianjin Youfa Steel Pipe Group Co., Ltd was founded on July 1st, 2000. There are totally about 8000 employees, 9 factories, 179 steel pipe production lines, 3 national accredited laboratory, and 1 Tianjin government accredited business technology center.
31 square and rectangular steel pipe production lines
Factories:
Tianjin Youfa Dezhong Steel Pipe Co.,Ltd;
Handan Youfa Steel Pipe Co.,Ltd;
Shanxi Youfa Steel Pipe Co., Ltd
