| Tolerance for wall thickness: | |
| Wall thickness t mm(in) |
Tolerances mm(in) |
| Welded Pipe | |
| ≤5.0(0.197) | ±0.5(0.020) |
| >5.0(0.197) to<15.0(0.591) | ±0.1 t |
| ≥15.0(0.591) | ±1.5(0.060) |
| Chemical Composition and Mechanical Property For PSL .1 | ||||||||||||
| Steel Grade | Chemical components | Mechanical performance | ||||||||||
| C(Max) | Mn(Max) | P | S(Max) | Tensile Strength(Min) | Yield Strength (Min) |
|||||||
| Min. | Max. | psi | Mpa | psi | Mpa | |||||||
| Welded Pipe | ||||||||||||
| X70 | 0.26 | 1.65 | / | 0.030 | 0.030 | 82700 | 570 | 70300 | 485 | |||