High Quality Carbon Steel Square & Rectangular Pipes from Trusted China Suppliers and Factory - 50,000 Tons in Stock
Specifications
| SIZE (MM) | THICKNESS (MM) | SIZE (MM) | THICKNESS (MM) |
|---|---|---|---|
| 25x25 | 1.5-2.5 | 25x50 | 1.7-4.0 |
| 30x30 | 1.5-2.8 | 30x50 | 1.7-4.0 |
| 40x40 | 1.7-4.0 | 30x60 | 1.7-5.0 |
| 50x50 | 1.7-5.0 | 40x50 | 1.7-5.0 |
| 60x60 | 1.8-6.0 | 40x60 | 1.7-5.0 |
| 70x70 | 1.8-6.0 | 40x80 | 1.8-6.0 |
| 75x75 | 1.8-6.0 | 50x100 | 1.8-6.0 |
| 80x80 | 1.8-6.0 | 60x120 | 2.0-6.0 |
| 90x90 | 2.0-6.0 | 50x150 | 2.2-8.0 |
| 100x100 | 2.2-8.0 | 75x125 | 2.2-8.0 |
| 120x120 | 4.0-12.0 | 80x120 | 2.2-8.0 |
| 150x150 | 2.75-12.0 | 80x160 | 4.0-12.0 |
| 160x160 | 4.0-12.0 | 100x200 | 2.75-12.0 |
| 200x200 | 4.0-12.0 | 150x200 | 4.0-12.0 |
| 250x250 | 4.0-12.0 | 150x250 | 4.0-12.0 |
| 300x300 | 5.75-12.0 | 100x300 | 4.0-12.0 |
| 400x400 | 6.0-12.0 | 200x400 | 4.0-12.0 |
| ASTM A500 Square & Rectangular Pipe - Chemical Composition by Grade | ||
|---|---|---|
| Element | Grade B (%) | Grade C (%) |
| Carbon (C) | 0.26 max | 0.26 max |
| Manganese (Mn) | 1.20 max | 1.20 max |
| Phosphorus (P) | 0.035 max | 0.035 max |
| Sulfur (S) | 0.035 max | 0.035 max |
| Silicon (Si) | 0.15–0.40 | 0.15–0.40 |
| Copper (Cu) | 0.20 max (opt.) | 0.20 max (opt.) |
| Nickel (Ni) | 0.30 max (opt.) | 0.30 max (opt.) |
| Chromium (Cr) | 0.30 max (opt.) | 0.30 max (opt.) |
| ASTM A500 Square & Rectangular Pipe - Mechanical Properties | ||
| Property | Grade B | Grade C |
| Yield Strength(MPa/ksi) | 290 MPa/42 ksi | 317 MPa/46 ksi |
| Tensile Strength(MPa/ksi) | 414-534 MPa/60-77 ksi | 450-565 MPa/65-82 ksi |
| Elongation(%) | 20% min | 18% min |
| Bend Test | Pass 180° | Pass 180° |
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FAQ
A: Absolutely. We are a direct manufacturer with our own large-scale facility located in Tianjin, China. You are more than welcome to visit us!
A: Certainly. We value every partner regardless of the order size. We can easily arrange an LCL (Less than Container Load) shipment to accommodate your specific needs.
A: Yes, we provide samples for free so you can verify our quality. We only ask the buyer to cover the courier cost.
A: Most sizes are in stock and can be shipped immediately.
A: We offer a wide range of steel grades including ASTM A500, EN10025, S235JR, S355JR, A36, Q235, Q355, and SS400 to meet different structural demands.
A: We offer comprehensive customization services, including pipe punching, painting, galvanizing, precise cutting, and welding according to your design specifications.
