| 
 公称尺寸 DN  | 
 公称压力PN  | 
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| 
 10  | 
 16  25  | 
 40  | 
 63  | 
|
| 
 50  | 
 18  | 
 18  | 
 18  | 
 20  | 
| 
 65  | 
 18  | 
 20  | 
 20  | 
 22  | 
| 
 80  | 
 20  | 
 22  | 
 24  | 
 24  | 
| 
 100  | 
 20  | 
 24  | 
 26  | 
 26  | 
| 
 150(125)  | 
 24  | 
 28  | 
 30  | 
 32  | 
| 
 200(175)  | 
 28  | 
 32  | 
 34  | 
 38  | 
| 
 250(225)  | 
 28  | 
 36  | 
 38  | 
 42  | 
| 
 300  | 
 36  | 
 38  | 
 40  | 
 46  | 
| 
 350  | 
 36  | 
 42  | 
 46  | 
 50  | 
| 
 400  | 
 44  | 
 46  | 
 48  | 
 55  | 
| 
 450  | 
 44  | 
 48  | 
 50  | 
 60  | 
| 
 500  | 
 50  | 
 50  | 
 52  | 
 60  | 
| 
 注:括号里的公称尺寸不推荐使用。  | 
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