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GC-FG001 · Pipes & Tubes

Square Tube

方管

Seamless or welded square/rectangular hollow section with uniform wall, square corners and smooth welds — light, strong and versatile for steel structures, curtain-wall columns, machinery, guardrails and decoration.

Standard
GB/T 6728, GB/T 3094, ASTM A500, EN 10219, JIS G 3466
Sizes
Square 15×15–500×500mm, rectangular 20×30–300×500mm, wall 0.8–20mm
Length
6m / 9m / 12m (custom)
Surface
Hot-Rolled, Cold-Formed, HD Galvanized
Available grades
Q195Q235BQ355BA500 Gr.BS235JRS355JRSTK400
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Specifications
Length
6m / 9m / 12m, customizable (cut to length)
Process
HF welded & cold-formed, inner & outer deburring
Surface
Black / hot-dip galvanized / cold galvanized / painted
Material
Q195 / Q235B / Q355B / A500 Gr.B / S235JR, S355JR / STK400
Standard
GB/T 6728, GB/T 3094, ASTM A500, EN 10219, JIS G 3466
Size range
Square 15×15–500×500mm, rectangular 20×30–300×500mm, wall 0.8–20mm
Applications
ConstructionManufacturingShipbuilding
Product FAQ

We stock Q195, Q235B, Q355B, A500 Gr.B and more, matched to your destination standard.

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