管径对照表
|
公称直径 |
英寸 |
外径 |
近似内经 |
壁厚 |
相当于无缝管 |
|
|
|
|
|
加厚 |
|
|
mm |
“ |
mm |
mm |
mm |
mm |
|
15 |
4分 |
21.25 |
15 |
2.75/3.25 |
22 |
|
20 |
6分 |
26.75 |
20 |
2.75/3.5 |
25 |
|
25 |
1寸 |
33.5 |
25 |
3.25/4 |
32 |
|
32 |
1.2寸 |
42.25 |
32 |
3.25/4 |
38 |
|
40 |
1.5寸 |
48 |
40 |
3.5/4.25 |
45 |
|
50 |
2寸 |
60 |
50 |
3.5/4.5 |
57 |
|
70 |
2.5寸 |
75.5 |
70 |
3.75/4.5 |
76 |
|
80 |
3寸 |
88.5 |
80 |
4/4.75 |
89 |
|
100 |
4寸 |
114 |
106 |
4/5.0 |
108 |
|
125 |
5 |
140 |
131 |
5/.5.5 |
133 |
|
150 |
6 |
165 |
156 |
5/5.5 |
159 |
|
200 |
8 |
219 |
207 |
6 |
219 |
|
250 |
10 |
273 |
259 |
7 |
273 |
|
300 |
12 |
325 |
309 |
8 |
435 |
|
350 |
14 |
377 |
|
9 |
485 |
|
400 |
16 |
425 |
|
9 |
535 |
|
450 |
18 |
478 |
|
9 |
590 |
|
500 |
20 |
529 |
|
9 |
640 |
|
600 |
24 |
630 |
|
10 |
755 |
|
700 |
28 |
720 |
|
10 |
860 |
|
800 |
32 |
820 |
|
|
975 |
