钢管种类 |
钢管外径(D) |
钢管壁厚(S) |
||
管体 |
钢管外径 (mm) |
允许偏差(mm) |
钢管外径(mm) |
允许偏差(mm) |
≥60.3且S<20 |
±0.75% |
≤73.0 |
15%,-12.5% |
|
≥60.3且S≥20 |
±1.00% |
>73.0且S<20 |
15%,-12.5% |
|
>73.0且S≥20 |
17.5%,-10 |