S355/ST37-2/ST52-3 Square Steel Tube

Product Details

S355/ST37-2/ST52-3 Square steel tube

Quick detail

1. Size: 20*20-500*500mm.

2. Length: According to customers’ requirements.

3. Standard: ASTM A500, EN10210, JIS G3466, GB/T3094-2000, GB/T6728-2002 etc.

4. Material: A53 Gr.B, S355, ST37, ST52, STKR400, STKR490, Q235, Q345, 16Mn etc.


Square steel tube is a welded structural grade tubing. Either grade is ideal for all structural applications, general fabrication, manufacturing and repairs. Rectangular steel tube is widely used in industrial maintenance, agricultural implements, transportation equipment, truck beds, trailers, frames, etc. Its box-shape configuration allows for much greater strength and rigidity compared to angles or channels. This steel shape is easy to weld, cut, form and machine with the proper equipment and knowledge.


Product name

S355 Square steel tube




2.5—30 mm


2—12 m, according to customers' requirements


S235 S275 S355JOH S355J2H S355JRH A500 A B C D


JIS STKR400/DIN EN10210/DIN EN10219/ASTM A500/GB/T 3094-2000/GB/T6728-2002

Place of Origin



2000 Ton/month


Packed by steel strips, Packed by nylon bags,according to customers' requirements


Construction, e. g: bridge construction, steel structure, machine manufacturing, greenhouse building, fence pipe etc

Main market:

North and South America, East and West Europe, Middle east, Africa, South and southeast Asia, Australia

Surface Treatment

Galvanized, PE, anti rust oil etc.


Square steel tubes are widely used in Construction,machine structure pipe, Greenhouse pipe, Building material tube, Furniture tube, Low pressure fluid tube,bridge, highway, windows of model steel door, machinery, chemical industry,supermarket goods shelf etc.

Competitive advantage

1. One-stop purchasing saving time and cost for customer

2. Free sample can be provided 

3. Small order is acceptable

4. OEM is acceptable

5. Any third party testing is acceptable

6. Promise To delivery the goods on time

7. Customized production and packing for customer

8. Providing one-stop solution for customer with 30 years sales experience

9. Discount according to order quantity

Loading and shipping

Welcome to wholesale low price s355/st37-2/st52-3 square steel tube in stock from our factory. TOPSINO is one of the most competitive Square Steel PIPE manufacturers and suppliers in China.