石油、天然气工业用螺柱连接阀盖的钢制闸阀 k系数表
闸阀的公称压力 PN |
系数 k |
16~20 |
1.25 |
25~50 |
1.00 |
63~100 |
0.91 |
150﹑160 |
1.00 |
250﹑260 |
0.97 |
420 |
1.00 |
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