公称外径
dn,mm
公称壁厚en,mm
标准尺寸比
SDR33
SDR21
SDR17
SDR13.6
SDR11
公称压力,Mpa
0.4
0.6
0.8
1.0
1.25
16
—
20
25
2.3
32
3.0
40
3.7
50
4.6
63
4.7
5.8
75
4.5
5.6
6.8
90
4.3
5.4
6.7
8.2
110
5.3
6.6
8.1
10.0
125
6.0
7.4
9.2
11.4
140
8.3
10.3
12.7
160
4.9
7.7
9.5
11.8
14.6
180
5.5
8.6
10.7
13.3
16.4
200
6.2
9.6
11.9
14.7
18.2
225
6.9
10.8
13.4
16.6
20.5
250
14.8
18.4
22.7
280
20.6
25.4
315
9.7
15.0
18.7
23.2
28.6
355
10.9
16.9
21.1
26.1
32.2
400
12.3
19.1
23.7
29.4
36.3
450
13.8
21.5
26.7
33.1
40.9
500
15.3
23.9
29.7
36.8
45.4
560
17.2
33.2
41.2
50.8
630
19.3
30.0
37.4
46.3
57.2
710
21.8
33.9
42.1
52.2
800
24.5
38.1
47.4
58.8
900
27.6
42.9
53.3
1000
30.6
47.7
59.3
SDR26
1.6
4.2
4.8
12.1
13.6
21.4
24.1
27.2
34.4