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钢管规格尺寸对照表

时间:2026-03-20 18:35:49

公称直径 (DN) 与外径 (Ф) 对照表

| DN | 外径 (mm) | 壁厚 (mm) |

| --- | --------- | --------- |

| 6 | 13.5 | - |

| 8 | 17| - |

| 10 | 18| - |

| 15 | 21.25 | - |

| 20 | 25| - |

| 25 | 32| - |

| 32 | 42.25 | - |

| 40 | 48| - |

| 50 | 57| - |

| 65 | 75.5 | - |

| 80 | 88.5 | - |

| 100 | 114 | - |

| 125 | 140 | - |

| 150 | 165 | - |

| 175 | 194 | - |

| 200 | 219 | - |

| 225 | 245 | - |

| 250 | 273 | - |

| 300 | 325 | - |

| 350 | 377 | - |

| 400 | 426 | - |

| 450 | 478 | - |

| 500 | 529 | - |

| 600 | 630 | - |

| 700 | 720 | - |

| 800 | 820 | - |

钢管尺寸规格表(单位:mm)

| DN | 内径 (mm) | 外径 (mm) | 壁厚 (mm) |

| --- | --------- | --------- | --------- |

| 15 | 12.7 | 21.3 | 2.0 |

| 20 | 18.4 | 26.9 | 2.3 |

| 25 | 23.1 | 33.7 | 2.8 |

| 32 | 28.6 | 42.4 | 3.2 |

| 40 | 34.0 | 48.3 | 3.6 |

| 50 | 39.4 | 60.3 | 3.9 |

| 65 | 51.0 | 76.1 | 4.5 |

| 80 | 63.5 | 88.9 | 5.0 |

| 100 | 76.0 | 114.3 | 5.5 |

| 125 | 94.0 | 139.7 | 6.0 |

| 150 | 112.0 | 168.3 | 6.5 |

| 175 | 131.0 | 194.0 | 6.5 |

| 200 | 149.0 | 219.1 | 7.5 |

| 225 | 168.0 | 245.0 | 8.5 |

| 250 | 187.0 | 273.0 | 8.5 |

| 300 | 216.0 | 323.9 | 9.5 |

| 350 | 245.0 | 355.6 | 10.0 |

| 400 | 274.0 | 406.4 | 11.