Product Catalogue · Factory-Direct Bulk Supply
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Factory-direct bulk steel supply from our Jinan yard -- 2,800+ specifications in stock, ready for immediate container loading.
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Product catalogue
Showing 1-12 of 97 products
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WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235B Q345B DIN Welded Steel Pipe Factory Direct Supplier
Q235B Q345B DIN Welded Steel Pipe, round section, length 6m–12m, tolerance ±5% — available in hot rolled, cold rolled, and...
Aug 7, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
A53 A106 Alloy Steel Square Welded Pipe DIN ASTM 6-900mm Factory Direct
A53/A106 Alloy Steel Square Welded Pipe, DIN ASTM, outer diameter 6–900 mm, ±1% tolerance — welded construction with hot rolled,...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235 S355JR ERW Welded Square Steel Tube ASTM Supplier
Q235 S355JR ERW Welded Square Steel Tube, ASTM, wall thickness 0.9 mm, length 6 m / 6.4 m / 12...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
C350 AS 1163 Square Hollow Section 65x65x2.5mm Factory Direct Supplier
C350 AS 1163 Square Hollow Section, 65×65×2.5 mm, ERW welded with ±1% tolerance — hot-rolled surface ensures weldability and structural...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235B ERW Welded Square Steel Tube 40×60 40×80 Factory Direct Supplier
Q235B ERW Welded Square Steel Tube, ASTM, 40×60 mm / 40×80 mm, wall thickness 1.5–5 mm — hot-rolled black finish...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235 Q345 ERW Welded Square Steel Tube 10-600mm Factory Direct
Q235 Q345 ERW Welded Square Steel Tube, 10×10–600×600 mm, wall thickness 0.8–30 mm — ERW welded process with 100% water...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
S235 S355 Welded Square Steel Tube 10×10-600x600mm Factory Direct
S235 S355 Welded Square Steel Tube, EN 10219, side length 10×10–600×600 mm, wall thickness 0.8–30 mm — ERW welded process...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
ASTM A500 ERW Square Steel Tube 10-600mm Factory Direct Supplier
Q195–Q345 ERW Square Steel Tube, ASTM A500, 10×10–600×600 mm, wall thickness 0.8–30 mm — ERW welded process with 100% water...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q235 S235 Welded Square Tube 10-600mm EN Standard Factory Direct Supplier
Q235 / S235 Welded Square Tube, EN Standard, 10×10–600×600 mm, wall thickness 0.8–30 mm — produced via ERW welding on...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q345B ERW Welded Square Steel Tube 110x110mm Factory Direct Supplier
Q345B ERW Welded Square Steel Tube, ASTM A500/EN10219, 110×110 mm, wall thickness 24 gauge (1.5–2.0 mm) — ERW process with...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
Q345B ERW Welded Square Steel Tube 110x110mm Factory Direct Supplier
Q345B ERW Welded Square Steel Tube, ASTM A500/EN10219, 110×110 mm, wall thickness 24 gauge (1.5–2.0 mm) — ERW process with...
Aug 6, 2026 View details -
WELDED SQUARE AND RECTANGULAR STEEL TUBE
S235JR ERW Welded Square Steel Tube Cold Rolled CE Certified Factory Direct Supplier
S235JR ERW Welded Square Steel Tube, EN 10219, tolerance ±1%, cold rolled finish — ERW welding delivers cost-efficient precision for...
Aug 6, 2026 View details
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