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The main grade of our products includes: carbon steel(Q195,Q215,Q235), structural alloy steel.
Steel welding pipe
Commodity | Size | Size tolerance | Thickness | Length Tolerance |
Circle Pipe | Φ13~Φ25.4 | ±0.10 | 0.5~1.5 | +50mm |
| Φ18~Φ25.4 | ±0.10 | 1.5~2.0 | +50mm |
| Φ25.4~Φ34 | ±0.10 | 0.7~2.0 | +50mm |
| Φ34~Φ50.8 | ±0.12 | 0.8~3.0 | +50mm |
| Φ50.8~Φ79.2 | ±0.12 | 1.0~3.0 | +50mm |
Square Pipe | 16×16~25.4×25.4 | ±0.15 | 0.7~2.0 | +50mm |
| 30×30~50×50 | ±0.20 | 1.0~3.0 | +50mm |
| 60×60 | ±0.15 | 0.7~2.0 | +50mm |
| 100×100--200×200 | ±0.60 | 3.0~6.0 | +50mm |
Rectangle Pipe | 10×20~20×40 | ±0.20 | 0.8~1.5 | +50mm |
| 20×40~30×50 | ±0.25 | 1.0~2.5 | +50mm |
| 25×70~38.1×76.2 | ±0.25 | 1.2~2.5 | +50mm |
| 30×60~40×80 | ±0.30 | 1.2~2.5 | +50mm |
| 120×60~150×250 | ±0.60 | 3.0~6.0 | +50mm |
Ellipse Pipe | Φ10×20~Φ20×40 | ±0.20 | 0.8~1.5 | +50mm |
| Φ30×60~Φ20×100 | ±0.30 | 1.2~2.5 | +50mm |