K9.K8.K7球墨铸铁管壁厚对比

　

公称直径(diameter)DN
mm
K9公称壁厚
mm
K9最小
壁厚
mm
K8公称壁厚
mm
K8最小
壁厚
mm
K7公称壁厚
mm
K7最小
壁厚
mm
80
6.0
4.7
6.0
4.7
6.0
4.7
100
6.0
4.7
6.0
4.7
6.0
4.7
125
6.0
4.7
6.0
4.7
6.0
4.7
150
6.0
4.7
6.0
4.7
6.0
4.7
200
6.3
4.8
6.0
4.7
6.0
4.7
250
6.8
5.3
6.0
4.7
6.0
4.7
300
7.2
5.6
6.4
4.8
6.0
4.7
350
7.7
6.1
6.8
5.2
6.0
4.7
400
8.1
6.4
7.2
5.5
6.3
4.6
450
8.6
6.9
7.6
5.9
6.7
5.0
500
9.0
7.2
8.0
6.2
7.0
5.2
600
9.9
8.0
8.8
6.9
7.7
5.8
700
10.8
8.8
9.6
7.6
8.4
6.4
800
11.7
9.6
10.4
8.3
9.1
7.0
900
12.6
10.4
11.2
9.0
9.8
7.6
1000
13.5
11.2
12.0
9.7
10.5
8.2
1100
14.4
12.0
12.8
10.4
11.2
8.8
1200
15.3
12.8
13.6
11.1
11.9
9.4
1400
17.1
14.4
15.2
12.5
13.3
10.6
1500
18.0
15.2
16.0
13.2
14.0
11.2
1600
18.9
16.0
16.8
13.9
14.7
11.8
1800
20.7
17.6
18.4
15.3
16.1
13.0
2000
22.5
19.2
20.0
16.7
17.5
14.2
2200
24.3
20.8
21.6
18.1
18.9
15.4
2400
26.1
22.4
23.2
19.5
20.3
16.6
2600
27.9
24.0
24.8
20.9
21.7
17.8