Product Catalogue
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Sharp-corner rectangular tube, seamless and welded hollow sections, round pipe and section steel -- 2,800+ specifications, wall thickness up to 40 mm, certified for export to 50+ countries.
- 20×20 - 800×800 mm
- WT ≤ 40.0 mm
- Q195 - Q690 / S355J2
- 557+ items online
96 products found
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WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235B Q345B DIN Standard Welded Steel Pipe Supplier
Q235B/Q345B Welded Steel Pipe, DIN Standard, round section, lengths 6m/9m/12m — ERW welded process delivers cost-efficient performance for general structural and fluid...
Aug 7, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
A53 A106 Welded Square Steel Pipe DIN Standard 6-900mm Supplier
A53/A106 Welded Square Steel Pipe, DIN/ASTM standard, outer diameter 6–900 mm, ±1% tolerance — available in multi-grade coverage including ASTM A53, A106,...
Aug 7, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q195-Q345 S355JR Welded Square Steel Tube ASTM ERW Supplier
Q195/Q235/Q345/S355JR Welded Square Steel Tube, ASTM, wall thickness 0.9 mm, length 6 m / 6.4 m / 12 m — ERW process...
Aug 7, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
AS1163 C350 Square Steel Tube 65x65x2.5mm ERW SHS Supplier
AS1163 C350 Square Steel Tube, ERW welded SHS, 65 × 65 mm with 2.5 mm wall thickness — hot rolled finish with...
Aug 7, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235B ERW Welded Square Steel Tube 40×40-80mm Supplier
Q235B ERW Welded Square Steel Tube, 40×40–40×80 mm, wall thickness up to 3 mm, lengths 6–12 m — hot rolled black finish...
Aug 7, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235 Q345 ERW Welded Square Rectangular Steel Tube 10-600mm
Q235 Q345 ERW Welded Square and Rectangular Steel Tube, 10×10 mm to 600×600 mm, wall thickness 0.8–30 mm — ERW process delivers...
Aug 6, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
S235 S355 Welded Square Steel Tube 10×10-600x600mm CE Certified Supplier
S235 S355 Welded Square Steel Tube, 10×10–600×600 mm, wall thickness 0.8–30 mm — ERW welded process ensures cost-effective precision for structural frames...
Aug 6, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
ASTM A500 ERW Square Steel Tube S235 S355 10-600mm CE Certified Supplier
S235/S355 ERW Welded Square Steel Tube, ASTM A500, 10×10–600×600 mm, wall thickness 0.8–30 mm — ERW welded process delivers cost-efficient precision for...
Aug 6, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235 Q345 S235 S355 Welded Square Steel Tube 10-600mm Factory Direct
Q235/Q345/S235/S355 Welded Square Steel Tube, 10×10–600×600 mm, wall thickness 0.8–30 mm — ERW welded process ensures cost-effective production with ±1% dimensional tolerance...
Aug 6, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q345B ERW Welded Square Steel Tube 110x110mm Factory Supplier
Q345B ERW Welded Square Steel Tube, ASTM A500/EN10219, 110×110 mm, wall thickness 2 mm — cold rolled finish with ±1% dimensional tolerance,...
Aug 6, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
S235JR ERW Welded Square Steel Tube CE Certified Supplier
S235JR ERW Welded Square Steel Tube, EN 10219, cold rolled finish, tolerance ±1% — ERW process ensures cost-effective precision for structural framing...
Aug 6, 2026 View specs -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
S355JR ERW Welded Square Steel Tube 40x40x3mm CE Certified Factory Supplier
S355JR ERW Welded Square Steel Tube, EN10219, 40×40×3 mm — manufactured via electric resistance welding with ±1% dimensional tolerance, available in equivalent...
Aug 6, 2026 View specs
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Custom cutting, marking, mill test certificates and professional container loading included. ISO 9001:2015 · Lloyd's CE · SGS / BV verified.