
| 標準 | 牌號 | 化學成分 |  | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V> | ||
| ASTM A192 ASME SA192 | A192 | 0.06-0.18 | ≤0.25 | 0.27-0.63 | ≤0.035 | ≤0.035 | / | / | / | / | / | 
| 鋼管種類 | 外徑(D) | 壁厚(S) | ||
| 外徑尺寸(mm) | 允許偏差(mm) | 外徑尺寸(mm) | 允許偏差(mm) | |
| 熱軋管 | ≤101.6 | +0.4~-0.8 | 76~168.3 | +28%~0 | 
| >101.6~168.3 | +0.4~-1.2 | |||
| 冷拔管 | <25.4 | +0.10 | ≤38.1 | +20%~0 | 
| 25.4~38.1 | +0.15 | |||
| >38.1~<50.8 | +0.20 | >38.1 | +22%~0 | |
|  |  | |||