DN法兰标准大全(尺寸对照表)

常用新标准管法兰连接尺寸(PN0.25MPa~PN4.0Mpa)

(GB9112~9131-88PN0.25~4.0MPa;JB/T74~90-94第一系列;HGJ44~76-91)单位:mm

公称通径DN 法兰外径D

螺栓孔中心圆直径K 螺栓孔直径L 螺栓螺纹Th 数量n 法兰外径D 螺栓孔中心圆直径K 螺栓孔

直径L 螺栓螺纹Th 数量n

法兰外径D 螺栓孔中心圆直径K 螺栓孔直径L 螺栓螺纹Th

数量n 10755011M104755011M104

9060

14M12415805511M104805511M104956514M12420906511M104906511M1041057514M124251007511M1041007511M1041158514M124321209014M1241209014M12414010018M1644013010014M12413010014M12415011018M1645014011014M12414011014M12416512518M1646516013014M12416013014M12418514518M1648019015018M16419015018M16420016018M16810021017018M16421017018M16422018018M16812524020018M16824020018M16825021018M16815026522518M16826522518M16828524022M16820032028018M16832028018M16834029522M16825037533518M1612375335

18M161239535022M1612300440

395

22

M20

12

440

22

M20

12

445

400

22

M20

12

公称通径DN 法兰外径D

螺栓孔中心圆直径K 螺栓孔直径L 螺栓螺纹Th 数量n 法兰外径D 螺栓孔中心圆直径K 螺栓孔

直径L 螺栓螺纹Th 数量n

法兰外径D 螺栓孔中心圆直径K 螺栓孔直径L 螺栓螺纹Th

数量n 10906014M124906014M124

9060

14M12415956514M124956514M124956514M124201057514M1241057514M1241057514M124251158514M1241158514M1241158514M1243214010018M16414010018M16414010018M1644015011018M16415011018M16415011018M16450

165125

18

M16

4

165

125

18

M16

4

165

125

18

M16

8

PN0.25MPa(2.5bar)

PN0.6MPa(6bar)

PN1.0MPa(10bar)

PN1.6MPa(16bar)

PN2.5MPa(25bar)

PN4.0MPa(40bar)

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