| Tolerance for wall thickness: | |
| Wall thickness t mm(in) |
Tolerances mm(in) |
| SMLS pipe | |
| ≤4.0(0.157) | +0.6(0.024) |
| +0.5(0.020) | |
| >4.0(0.157) to <25.0(0.984) | +0.150 t |
| -0.125 t | |
| ≥25.0(0.984) | +3.7(0.146) or 0.1 t,whichever is the greater |
| -3.0(0.120) or -0.1 t,whichever is the greater | |
| 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 | ||||||||||
| Seamless Pipe | |||||||||||||||
| B | 0.28 | 1.20 | / | 0.030 | 0.030 | 60200 | 415 | 35500 | 24 | ||||||