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Help CenterSteel Pipe & Tube＆Square Steel Pipe，Q195, Q235B, Q355B, 10#, 20#, 45#, ASTM A500, ASTM A36
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1. Product Name
Square Steel Pipe, Square Steel Tube, Square Hollow Section (SHS), Rectangular Steel Tube
2. Product Types
Welded Square Steel Pipe
Seamless Square Steel Pipe
Hot Dipped Galvanized Square Pipe
Black Square Steel Tube
Structural Square Tube
3. Main Material Grades
Q195, Q235B, Q355B, 10#, 20#, 45#, ASTM A500, ASTM A36
4. Standard Specifications
Outer Size: 10×10mm – 600×600mm
Wall Thickness: 0.8mm – 30mm
Length: 6m, 9m, 12m or customized
End Treatment: Plain end
5. Packing
Bundle packing with steel strips, wrapped with plastic film
6. Tolerance
Side Length Tolerance: ±0.1mm – ±1.0mm
Wall Thickness Tolerance: ±0.1mm – ±0.5mm
Length Tolerance: ±5mm – ±20mm
Straightness: Comply with GB, ASTM standards
7. Execution Standards
GB/T 6728, GB/T 3094, ASTM A500, JIS G3466
8. Product Features
High dimensional accuracy
Good bending and torsion resistance
Uniform wall thickness
Smooth surface
High structural strength
Easy to weld and install
9. Main Applications
Building steel structure
Construction engineering
Mechanical manufacturing
Scaffolding
Furniture and decoration
Automotive and machinery parts
10. Delivery Condition
Hot rolled, cold formed, welded, galvanized
11. Surface Treatment
Black (mill finish)
Hot-dip galvanized
Anti-rust oil coated
12. Lead Time
5–7 days
13. Certificates
Mill Test Certificate (MTC), ISO 9001, SGS, BV
14. Payment Terms
T/T, L/C, D/P, D/A
15. Loading Port
Tianjin, Qingdao, Shanghai
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