公称直径DN
mm
K9公称壁厚
K9最小壁厚
80
6.0
4.7
100
125
150
200
6.3
4.8
250
6.8
5.3
300
7.2
5.6
350
7.7
6.1
400
8.1
6.4
450
8.6
6.9
500
9.0
600
9.9
8.0
700
10.8
8.8
800
11.7
9.6
900
12.6
10.4
1000
13.5
11.2
1100
14.4
12.0
1200
15.3
12.8
1400
17.1
1500
18.0
15.2
1600
18.9
16.0
1800
20.7
17.6
2000
22.5
19.2
2200
24.3
20.8
2400
26.1
22.4
2600
27.9
24.0
