管件壁厚等级和公称壁厚(摘自GB/T12459-1990)
公称
通径
DN
|
外 径
|
公 称 壁 厚
|
A系列
|
B系列
|
Sch5S
|
Sch10S
|
Sch20S
|
Sch20
|
Sch30
|
Sch40
|
Sch60
|
Sch80
|
Sch100
|
Sch120
|
Sch140
|
Sch160
|
15
|
21.3
|
18
|
1.6
|
2.1
|
2.6
|
—
|
—
|
2.9
|
—
|
3.6
|
—
|
—
|
—
|
4.5
|
20
|
26.9
|
25
|
1.6
|
2.1
|
2.6
|
—
|
—
|
2.9
|
—
|
4.0
|
—
|
—
|
—
|
5.6
|
25
|
33.7
|
32
|
1.6
|
2.8
|
3.2
|
—
|
—
|
3.2
|
—
|
4.5
|
—
|
—
|
—
|
6.3
|
32
|
42.4
|
38
|
1.6
|
2.8
|
3.2
|
—
|
—
|
3.6
|
—
|
5.0
|
—
|
—
|
—
|
6.3
|
40
|
48.3
|
45
|
1.6
|
2.8
|
3.2
|
—
|
—
|
3.6
|
—
|
5.0
|
—
|
—
|
—
|
7.1
|
50
|
60.3
|
57
|
1.6
|
2.8
|
3.6
|
3.2
|
—
|
4.0
|
—
|
5.6
|
—
|
—
|
—
|
8.8
|
65
|
76.1(73)
|
76
|
2.0
|
3.0
|
3.6
|
4.5
|
—
|
5.0
|
—
|
7.1
|
—
|
—
|
—
|
10.0
|
80
|
88.9
|
89
|
2.0
|
3.0
|
4.0
|
4.5
|
—
|
5.6
|
—
|
8.0
|
—
|
—
|
—
|
11.0
|
90
|
101.6
|
—
|
2.0
|
3.0
|
4.0
|
4.5
|
—
|
5.6
|
—
|
8.0
|
—
|
—
|
—
|
12.5
|
100
|
114.3
|
108
|
2.0
|
3.0
|
4.0
|
5.0
|
—
|
5.9
|
—
|
8.8
|
—
|
11.0
|
—
|
14.2
|
125
|
139.7
|
133
|
2.9
|
3.4
|
5.0
|
5.0
|
—
|
6.3
|
—
|
10.0
|
—
|
12.5
|
—
|
16.0
|
150
|
168.3
|
159
|
2.9
|
3.4
|
5.0
|
5.6
|
—
|
7.1
|
—
|
11.0
|
—
|
14.2
|
—
|
17.5
|
200
|
219.1
|
219
|
2.9
|
4.0
|
6.3
|
6.3
|
7.1
|
8.0
|
10.0
|
12.5
|
16.0
|
17.5
|
20.0
|
22.2
|
250
|
273.0
|
273
|
3.6
|
4.0
|
6.3
|
6.3
|
8.0
|
8.8
|
12.5
|
16.0
|
17.5
|
22.2
|
25.0
|
28.0
|
300
|
323.9
|
325
|
4.0
|
4.5
|
6.3
|
6.3
|
8.8
|
10.0
|
14.2
|
17.5
|
22.2
|
25.0
|
28.0
|
32.0
|
350
|
355.6
|
377
|
4.0
|
5.0
|
—
|
8.0
|
10.0
|
11.0
|
16.0
|
20.0
|
25.8
|
28.0
|
32.0
|
36.0
|
400
|
406.4
|
426
|
4.0
|
5.0
|
—
|
8.0
|
10.0
|
12.5
|
17.5
|
22.2
|
28.0
|
30.0
|
36.0
|
40.0
|
450
|
457.0
|
478
|
4.0
|
5.0
|
—
|
8.0
|
11.0
|
14.2
|
20.0
|
25.0
|
30.0
|
36.0
|
40.0
|
45.0
|
500
|
508.0
|
529
|
5.0
|
5.6
|
—
|
10.0
|
12.5
|
16.0
|
20.0
|
28.0
|
32.0
|
40.0
|
45.0
|
50.0
|
注: Sch5S、Sch10S和Sch20S为不锈钢管件用壁厚等级。
