壓力表常見的螺紋管牙規(guī)格
點擊次數(shù):3844 更新時間:2018-12-10
壓力表常見的螺紋管牙規(guī)格
螺紋種類 | 記號 | 規(guī)格 | 螺山角度 | |
直牙 | 公制普通螺紋 | M | JIS B 0251 | 60° |
公制細螺紋 | 壓力表常見的螺紋管牙規(guī)格JIS B 0252 | |||
管用平行螺紋 | G | JIS B 0202 | 55° | |
管用平行螺紋 | PF | JIS B 0254 | ||
管用平行母螺紋 | PS | JIS B 0253 | ||
斜牙 | 管用錐形螺紋 | R | JIS B 0203 | 55° |
管用錐形螺紋 | PT | JIS B 0253 | ||
美制管用錐形螺紋 | NPT | ANSI B2.1 | 60° |
| 1/8" | 1/4" | 3/8" | 1/2" | 3/4" | 1" | 1-1/4" | 1-1/2" | 2" | |||
外徑 | NPT | 9.489 | 12.487 | 15.926 | 19.772 | 25.117 | 31.461 | 40.218 | 46.287 | 58.325 | ||
PT | 9.728 | 13.157 | 16.662 | 20.955 | 26.441 | 33.249 | 41.910 | 47.803 | 59.614 | |||
PF / PS | 9.728 | 13.157 | 16.662 | 20.955 | 26.441 | 33.249 | 41.910 | 47.803 | 59.614 | |||
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牙數(shù) | NPT | 27 | 18 | 18 | 14 | 14 | 11-1/2 | 11-1/2 | 11-1/2 | 11-1/2 | ||
PT | 28 | 19 | 19 | 14 | 14 | 11 | 11 | 11 | 11 | |||
PF / PS | 28 | 19 | 19 | 14 | 14 | 11 | 11 | 11 | 11
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