鋼管外徑和公稱直徑
公稱直徑
鋼管外徑
A系列(英制管)
B系列(公制管)
DN10
17.2
14
DN 15
21.3
18
DN 20
26.9
25
DN 25
33.7
32
DN 32
42.4
38
DN 40
48.3
45
DN 50
60.3
57
DN 65
76.1
76
DN 80
88.9
89
DN 100
114.3
108
DN 125
139.7
133
DN 150
168.3
159
DN 200
219.1
219
DN 250
273
DN 300
323.9
325
DN 350
355.6
377
DN 400
406.4
426
DN 450
457
480
DN 500
508
530
DN 600
610
630
DN 700
711
720
DN 800
813
820
DN 900
914
920
DN 1000
1016
1020
DN 1200
1219
1220
DN 1400
1422
1420
DN 1600
1626
1620
DN 1800
1829
1820
DN 2000
2032
2020
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