单位为毫米 |
||||
公称通径 |
最小通道直径 |
|||
DN |
PN 1.6 MPa~10.0 Mpa |
PN 15.0 MPa |
PN 25.0 MPa |
PN 42.0 MPa |
50 |
49 |
49 |
49 |
42 |
65 |
62 |
62 |
62 |
52 |
80 |
74 |
74 |
74 |
62 |
100 |
100 |
100 |
100 |
87 |
150 |
150 |
150 |
144 |
131 |
200 |
201 |
201 |
192 |
179 |
250 |
252 |
252 |
239 |
223 |
300 |
303 |
303 |
287 |
265 |
350 |
334 |
322 |
315 |
— |
400 |
385 |
373 |
360 |
|
450 |
436 |
423 |
— |
|
500 |
487 |
471 |
||
550 |
538 |
522 |
||
600 |
589 |
570 |
||
650 |
633 |
617 |
||
700 |
684 |
665 |
||
750 |
735 |
712 |
||
800 |
779 |
760 |
||
850 |
830 |
808 |
||
900 |
874 |
855 |
||
950 |
925 |
— |
||
1000 |
976 |
|||
1050 |
1020 |
|||
1200 |
1166 |
|||
1400 |
1312 |
|||
1500 |
1458 |
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