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dn400球墨铸铁管外径是多少?标准尺寸及壁厚对照表

| 公称直径(mm) | 壁厚(mm) | 外径(mm) | 管重(kg/m) |

| — | – | – | |

| DN100 | 7.0 | 114 | 6.5 |

| DN150 | 8.5 | 140 | 10.5 |

| DN200 | 9.5 | 165 | 14.0 |

| DN250 | 10.5 | 180 | 17.5 |

| DN300 | 11.5 | 195 | 21.0 |

| DN350 | 12.5 | 210 | 24.5 |

| DN400 | 13.5 | 226 | 28.0 |

| DN450 | 14.5 | 241 | 31.5 |

| DN500 | 15.5 | 256 | 35.0 |

| DN600 | 16.5 | 271 | 38.5 |

| DN700 | 17.5 | 286 | 42.0 |

| DN800 | 18.5 | 301 | 45.5 |

| DN900 | 19.5 | 316 | 49.0 |

| DN1000 | 20.5 | 331 | 52.5 |

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