石油、石化及相关工业用钢制截止阀和升降式止回阀 阀盖填料箱部分的最小壁厚
                                                                                                                                                                                                      
|   填料箱装填料入口 处的直径/mm  | 
  公 称 压 力 PN  | 
|||||
|   16、20  | 
  25~50  | 
  63~110  | 
  150﹑160  | 
  250﹑260  | 
  420  | 
|
|   最 小 壁 厚/mm  | 
||||||
|   15  | 
  2.8  | 
  3.0  | 
  3.6  | 
  4.2  | 
  5.3  | 
  7.6  | 
|   16  | 
  2.8  | 
  3.1  | 
  3.6  | 
  4.4  | 
  5.6  | 
  7.9  | 
|   17  | 
  2.8  | 
  3.2  | 
  3.7  | 
  4.5  | 
  5.8  | 
  8.2  | 
|   18  | 
  2.9  | 
  3.5  | 
  3.9  | 
  4.6  | 
  5.9  | 
  8.5  | 
|   19  | 
  3.0  | 
  3.8  | 
  4.1  | 
  5.1  | 
  6.1  | 
  8.9  | 
|   20  | 
  3.3  | 
  4.0  | 
  4.2  | 
  5.2  | 
  6.3  | 
  9.2  | 
|   25  | 
  4.0  | 
  4.8  | 
  4.8  | 
  6.3  | 
  7.1  | 
  11.0  | 
|   30  | 
  4.5  | 
  4.8  | 
  4.8  | 
  6.5  | 
  8.2  | 
  13.1  | 
|   35  | 
  4.8  | 
  4.8  | 
  5.1  | 
  7.1  | 
  9.7  | 
  14.5  | 
|   40  | 
  4.9  | 
  5.0  | 
  5.7  | 
  7.5  | 
  10.2  | 
  16.4  | 
|   50  | 
  5.5  | 
  6.2  | 
  6.3  | 
  7.9  | 
  11.6  | 
  19.8  | 
|   60  | 
  5.6  | 
  6.4  | 
  6.8  | 
  8.9  | 
  13.4  | 
  23.2  | 
|   70  | 
  5.6  | 
  6.9  | 
  7.4  | 
  9.9  | 
  15.8  | 
  26.5  | 
|   80  | 
  5.8  | 
  7.2  | 
  8.1  | 
  11.0  | 
  17.4  | 
  30.1  | 
|   90  | 
  6.4  | 
  7.4  | 
  8.8  | 
  12.0  | 
  19.1  | 
  33.2  | 
|   100  | 
  6.4  | 
  7.7  | 
  9.5  | 
  12.8  | 
  20.8  | 
  36.7  | 
|   110  | 
  6.4  | 
  8.1  | 
  10.3  | 
  14.1  | 
  22.9  | 
  40.1  | 
|   120  | 
  6.6  | 
  8.6  | 
  10.9  | 
  14.9  | 
  24.8  | 
  43.5  | 
|   130  | 
  7.1  | 
  8.8  | 
  11.3  | 
  16.2  | 
  26.5  | 
  46.9  | 
|   140  | 
  7.1  | 
  9.2  | 
  12.0  | 
  17.3  | 
  28.3  | 
  50.2  | 
|       注:中间尺寸的壁厚可以用插入法计算。  | 
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