公称直径DN
mm
K7公称壁厚
K7最小壁厚
80
6.0
4.7
100
125
150
200
250
300
350
400
6.3
4.6
450
6.7
5.0
500
7.0
5.2
600
7.7
5.8
700
8.4
6.4
800
9.1
900
9.8
7.6
1000
10.5
8.2
1100
11.2
8.8
1200
11.9
9.4
1400
13.3
10.6
1500
14.0
1600
14.7
11.8
1800
16.1
13.0
2000
17.5
14.2
2200
18.9
15.4
2400
20.3
16.6
2600
21.7
17.8
