ASTM A554 Hollow Stainless Steel Square Tube High Strength 304 Stainless Steel Square Pipe
Stainless steel square tube is a hollow structural section with four equal sides. It offers high strength, excellent corrosion resistance, and a clean, modern appearance.
Our square tubes are manufactured from premium stainless steel grades and are suitable for structural, architectural, and industrial applications. They are available in welded and seamless options to meet different project requirements.
| Parameter | Details |
|---|---|
| Standard | ASTM A554, A312, A269, EN 10296, JIS G3446, GB/T 12770 |
| Grades | 201, 304, 304L, 316, 316L |
| Size (Width x Width) | 10 x 10 mm – 200 x 200 mm |
| Wall Thickness | 0.8 mm – 6.0 mm |
| Length | 3000 mm, 4000 mm, 6000 mm (custom cut available) |
| Process | Welded (ERW) or Seamless (Cold Drawn) |
| Surface Finish | Mill finish, Pickled, Polished (No.4, BA, Mirror), Brushed |
| Element | Grade 304 | Grade 316 | Grade 201 |
|---|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.08 | ≤ 0.15 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | 5.5 – 7.5 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.050 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Chromium (Cr) | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 10.0 – 14.0 | 3.5 – 5.5 |
| Molybdenum (Mo) | — | 2.0 – 3.0 | — |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 304 | ≥ 515 | ≥ 205 | ≥ 35 |
| 316 | ≥ 515 | ≥ 205 | ≥ 35 |
| 201 | ≥ 620 | ≥ 310 | ≥ 30 |
Note: The values above are for reference only. Please refer to the mill test certificate for actual data.
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High strength-to-weight ratio
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Excellent corrosion resistance
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Clean, modern aesthetic
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Easy to weld, cut, and fabricate
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Available in welded or seamless options
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Multiple surface finishes available
Stainless steel square tube is used across a wide range of industries:
Structural & Architectural
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Handrails and guardrails
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Frames for buildings and canopies
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Support columns
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Staircase railings
Industrial
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Conveyor system frames
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Machine guards and enclosures
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Equipment supports
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Workbenches and shelving
Commercial & Decorative
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Furniture frames (tables, chairs, shelving)
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Display racks and stands
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Store fixtures
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Signage frames
Transportation
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Truck and trailer frames
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Bus handrails
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Marine railings
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Bicycle and motorcycle frames
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