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| 钢管标准表 |
公称通径
DN |
外径 |
公 称 壁 厚 |
A系列 |
B系列 |
Sch
5s |
Sch
10s |
Sch
15s |
Sch
20s |
Sch
30s |
Sch
40s |
Sch
60s |
Sch
80s |
Sch
100s |
Sch
120s |
Sch
140s |
Sch
160s |
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 |
-- |
-- |
4.0 |
-- |
5.0 |
-- |
-- |
-- |
7.1 |
50 |
60.3 |
57 |
1.6 |
2.8 |
3.6 |
3.2 |
-- |
5.0 |
-- |
5.6 |
-- |
-- |
-- |
8.8 |
65 |
76.1(73) |
76 |
2.0 |
3.0 |
3.6 |
4.5 |
-- |
5.6 |
-- |
7.1 |
-- |
-- |
-- |
10.0 |
80 |
88.9 |
89 |
2.0 |
3.0 |
4.0 |
4.5 |
-- |
5.9 |
-- |
8.0 |
-- |
-- |
-- |
11.0 |
90 |
101.6 |
-- |
2.0 |
3.0 |
4.0 |
4.5 |
-- |
6.3 |
-- |
8.0 |
-- |
-- |
-- |
12.5 |
100 |
114.6 |
108 |
2.0 |
3.0 |
4.0 |
5.0 |
-- |
7.1 |
-- |
8.8 |
-- |
11.0 |
-- |
14.2 |
125 |
139.7 |
133 |
2.9 |
3.4 |
5.0 |
5.0 |
-- |
8.0 |
-- |
10.0 |
-- |
12.5 |
-- |
16.0 |
150 |
168.3 |
159 |
2.9 |
3.4 |
5.0 |
5.6 |
-- |
8.8 |
-- |
11.0 |
-- |
14.2 |
-- |
17.5 |
200 |
219.1 |
219 |
2.9 |
4.0 |
6.3 |
6.3 |
7.1 |
10.0 |
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 |
12.5 |
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 |
14.2 |
14.2 |
17.5 |
22.2 |
25.0 |
28.0 |
32.0 |
350 |
355.6 |
377 |
4.0 |
5.0 |
-- |
8.0 |
10.0 |
16.0 |
16.0 |
20.0 |
25.8 |
28.0 |
32.0 |
36.0 |
400 |
406.4 |
426 |
4.0 |
5.0 |
-- |
8.0 |
10.0 |
17.5 |
17.5 |
22.2 |
28.0 |
30.0 |
36.0 |
40.0 |
450 |
457.0 |
478 |
4.0 |
5.0 |
-- |
8.0 |
11.0 |
20.0 |
20.0 |
25.0 |
30.0 |
36.0 |
40.0 |
45.0 |
500 |
508.0 |
529 |
5.0 |
5.6 |
-- |
10.0 |
12.5 |
20.0 |
20.0 |
28.0 |
32.0 |
40.0 |
45.0 |
50.0 |
注：１.除非用户有特殊要求，应优先保证端部外和公称壁厚的极限偏差
2.壁厚偏差指的是附录Ａ（参考件）中所列的极限偏差 |
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