石油、天然气工业用螺柱连接阀盖的钢制闸阀、阀杆的最小直径
公称尺寸 DN | 公 称 压 力 PN | |||||||||
| 16 | 20 | 25 | 40 | 50 | 63 | 100 | 150、160 | 250、260 | 420 | |
| 阀 杆 的 最 小 直 径/mm | ||||||||||
| 25 | 14.00 | 15.59 | 15.59 | 15.59 | 15.59 | 15.59 | 15.59 | 18.77 | 18.77 | 18.77 |
| 32 | 15.59 | 15.59 | 15.59 | 15.59 | 15.59 | 15.59 | 15.59 | 18.77 | 18.77 | 18.77 |
| 40 | 17.17 | 17.17 | 18.00 | 18.00 | 18.77 | 18.77 | 18.77 | 21.87 | 21.87 | 21.87 |
| 50 | 18.00 | 18.77 | 18.77 | 18.77 | 18.77 | 18.77 | 18.77 | 25.04 | 25.04 | 25.04 |
| 65 | 18.77 | 18.77 | 18.77 | 18.77 | 18.77 | 21.87 | 21.87 | 28.22 | 28.22 | 28.22 |
| 80 | 21.87 | 21.87 | 21.87 | 21.87 | 21.87 | 24.00 | 25.04 | 28.22 | 31.39 | 31.39 |
| 100 | 24.00 | 25.04 | 25.04 | 25.04 | 25.04 | 26.00 | 28.22 | 31.39 | 34.47 | 34.47 |
| 150 | 28.00 | 28.22 | 28.22 | 30.00 | 31.39 | 32.00 | 37.62 | 40.77 | 43.84 | 46.94 |
| 200 | 31.39 | 31.39 | 32.00 | 34.00 | 34.47 | 38.00 | 40.77 | 46.94 | 53.24 | 59.54 |
| 250 | 34.47 | 34.47 | 36.00 | 37.62 | 37.62 | 42.00 | 46.94 | 53.24 | 62.74 | 72.24 |
| 300 | 37.62 | 37.62 | 38.00 | 40.00 | 40.77 | 46.00 | 50.14 | 56.44 | 69.14 | 81.84 |
| 350 | 40.77 | 40.77 | 42.00 | 43.84 | 43.84 | 50.00 | 56.44 | 59.54 | 75.44 | — |
| 400 | 43.84 | 43.84 | 46.00 | 46.00 | 46.94 | 55.00 | 59.54 | 62.74 | 75.44 | — |
| 450 | 46.94 | 46.94 | 48.00 | 50.00 | 50.14 | 60.00 | 62.74 | 69.14 | — | — |
| 500 | 50.00 | 50.14 | 50.14 | 52.00 | 53.24 | 60.00 | 69.14 | 75.44 | — | — |
| 600 | 52.00 | 56.44 | 56.44 | 60.00 | 62.74 | 75.00 | 75.44 | — | — | — |
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