|
公称直径
|
管道的壁厚系列
|
管道内径D/in
|
管道内径D/mm
|
|
DN50(2in)
|
40
80
160
|
2.067
1.939
1.689
|
52.50
49.25
42.90
|
|
DN80(3in)
|
40
80
160
|
3.068
2.900
2.624
|
77.93
73.66
66.70
|
|
DN100(4in)
|
40
80
120
160
|
4.026
3.826
3.624
3.438
|
102.26
97.18
92.05
87.33
|
|
DN150(6in)
|
40
80
120
160
|
6.065
5.761
5.501
5.189
|
154.1
146.3
139.7
131.8
|
|
DN200(8in)
|
20
30
40
60
80
120
|
8.125
8.071
7.981
7.813
7.625
7.189
|
206.4
205.0
202.7
198.5
193.7
182.6
|
|
DN250(10in)
|
30
40
60
80
|
10.136
10.020
9.750
9.564
|
257.5
254.5
247.7
242.9
|
|
DN300(12in)
|
30
40
60
80
|
12.090
11.938
11.626
11.376
|
307.1
303.2
295.3
289.0
|
|
DN350(14in)
|
30
40
60
80
|
13.250
13.124
12.814
12.500
|
336.6
333.4
325.5
317.5
|
|
DN400(16in)
|
30
40
60
80
|
15.250
15.000
14.688
14.314
|
387.4
381.0
373.1
363.6
|
|
DN450(18in)
|
20
30
40
60
80
|
17.376
17.124
16.876
16.500
16.126
|
441.4
435.0
428.7
419.1
409.6
|
|
DN500(20in)
|
20
30
40
60
80
|
19.250
19.000
18.814
18.376
17.938
|
488.9
482.6
477.9
466.8
455.6
|
|
DN600(24in)
|
20
30
40
60
80
|
23.250
22.876
22.626
22.064
21.564
|
590.6
581.1
574.7
560.4
547.7
|
