We supply high-quality square tubes tailored for durability and precision in diverse industrial and architectural applications. Crafted from premium carbon steel, stainless steel (304/316), or alloy steel, our tubes are available in sizes ranging from 10×10mm to 300×300mm, with wall thicknesses from 0.5mm to 10mm. Ideal for construction frameworks, machinery, furniture, automotive parts, and solar installations, they combine lightweight design with exceptional strength and weldability. We offer welded or seamless options, surface finishes (galvanized, powder-coated, polished), and compliance with ASTM A500, EN 10219, and GB/T 6728 standards. Rigorously tested for dimensional accuracy and load-bearing capacity, our square tubes ensure reliability in demanding environments.
|
Parameter |
Range/Options |
|
Dimensions (W×H) |
10×10 mm – 300×300 mm (custom sizes available) |
|
Wall Thickness |
0.5 mm – 10 mm |
|
Length |
Standard: 6 meters (custom lengths up to 12 meters) |
|
Material Grades |
Carbon Steel (Q235, Q355), Stainless Steel (304, 316), Alloy Steel (S355JR) |
|
Surface Treatment |
Hot-dip galvanized, powder-coated, pre-painted, polished, or mill finish |
|
Applications |
Construction frames, machinery, furniture, automotive, solar racks, fencing |
|
Standard |
Scope |
Key Grades |
Key Features |
|
ASTM A500 |
Structural carbon steel tubing (USA) |
Grade A, B, C, D |
High strength-to-weight ratio, weldability |
|
EN 10219 |
Cold-formed welded tubes (Europe) |
S235JR, S355JR |
Complies with EU construction norms |
|
JIS G3466 |
Welded stainless tubes (Japan) |
SUS304, SUS316 |
Corrosion resistance, precision fabrication |
|
GB/T 6728 |
Chinese structural square tubes |
Q235, Q355 |
Widely used in domestic construction projects |
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