|
公制和英制管子公称直径（DN）对照表
| |||
|
|
|
|
|
|
公制，mm |
英制，in |
公制，mm |
英制，in |
|
6 |
1/8 |
250 |
10 |
|
8 |
1/4 |
300 |
12 |
|
10 |
3/8 |
350 |
14 |
|
15 |
1/2 |
400 |
16 |
|
20 |
3/4 |
500 |
20 |
|
25 |
1 |
600 |
24 |
|
(32) |
1 1/4 |
700 |
28 |
|
40 |
1 1/2 |
800 |
32 |
|
50 |
2 |
900 |
36 |
|
(65) |
2 1/2 |
1000 |
40 |
|
80 |
3 |
1100 |
44 |
|
(90) |
3 1/2 |
1200 |
48 |
|
100 |
4 |
1400 |
56 |
|
(125) |
5 |
1500 |
60 |
|
150 |
6 |
1600 |
64 |
|
(175) |
7 |
1800 |
72 |
|
200 |
8 |
2000 |
80 |
|
(225) |
9 |
2200 |
88 |