1、55圆锥管螺纹(BSPT)螺纹代号 基本尺寸 英 寸大径 mmd=D螺距 mmp每英寸牙数 tpi中径 mmd2=D2小径 外螺纹d3牙型高度 H1圆弧尺寸 r底孔尺寸 mmR 1/161/16“ 7.723 0.907 28 7.142 6.561 0.581 0.125 6.4R 1/8 1/8“ 9.728 0.907 28 9.147 8.566 0.581 0.125 8.4R 1/4 1/4“ 13.157 1.337 19 12.301 11.445 0.856 0.184 11.2R 3/8 3/8“ 16.662 1.337 19 15.806 14.950 0.856 0.
2、184 14.75R 1/2 1/2“ 20.955 1.814 14 19.793 18.631 1.162 0.249 18.25R 3/4 3/4“ 26.441 1.814 14 25.279 24.117 1.162 0.249 23.75R 1 1“ 33.249 2.309 11 31.77 30.291 1.479 0.317 30R 1 1/4 1 1/4“ 41.910 2.309 11 40.431 38.952 1.479 0.317 38.5R 1 1/2 1 1/2“ 47.803 2.309 11 46.324 44.845 1.479 0.317 44.5R 2
3、 2“ 59.614 2.309 11 58.135 56.656 1.479 0.317 56R 2 1/2 2 1/2“ 75.184 2.309 11 73.705 72.226 1.479 0.317 71R 3 3“ 87.884 2.309 11 86.405 84.926 1.479 0.317 85.5R 4 4“ 113.030 2.309 11 111.551 110.072 1.479 0.317 110.5R 5 5“ 138.430 2.309 11 136.951 135.472 1.479 0.317 136R 6 6“ 163.830 2.309 11 162.
4、351 160.872 1.479 0.317 161.5管螺纹尺寸表55圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) - 圆柱 (BSPP/BSPF) 螺纹代号 基本尺寸大径mmd=D螺距mmp每英寸牙数tpi中径mmd2=D2小径外螺纹d3牙型高度H1底孔尺寸mmG 1/8 1/8“ 9.728 0.907 28 9.147 8.566 0.581 8.7G 1/4 1/4“ 13.157 1.337 19 12.301 11.445 0.856 11.6G 3/8 3/8“ 16.662 1.337 19 15.806 14.95 0.856 15G 1/
5、2 1/2“ 20.955 1.814 14 19.793 18.631 1.162 19G 5/8 5/8“ 22.911 1.814 14 21.749 20.587 1.162 20.75G 3/4 3/4“ 26.441 1.814 14 25.279 24.117 1.162 24.5G 7/8 7/8“ 30.201 1.814 14 29.039 27.877 1.162 28G 1 1“ 33.249 2.309 11 31.77 30.291 1.479 30.5G 1 1/8 1 1/8“ 37.897 2.309 11 36.418 34.939 1.479 35G 1
6、1/4 1 1/4“ 41.91 2.309 11 40.431 38.952 1.479 39.5G 1 3/8 1 3/8“ 44.323 2.309 11 42.844 41.365 1.479 41.5G 1 1/2 1 1/2“ 47.803 2.309 11 46.324 44.845 1.479 45G 1 3/4 1 3/4“ 53.746 2.309 11 52.267 50.788 1.479 51G 2 2“ 59.614 2.309 11 58.135 56.656 1.479 57G 2 1/4 2 1/4“ 65.71 2.309 11 64.231 62.752
7、1.479 63G 2 1/2 2 1/2“ 75.184 2.309 11 73.705 72.226 1.479 72.5G 2 3/4 2 3/4“ 81.534 2.309 11 80.055 78.576 1.479 79G 3 3“ 87.884 2.309 11 86.405 84.926 1.479 85.G 3 1/4 3 1/4“ 93.98 2.309 11 92.501 91.022 1.479 91G 3 1/2 3 1/2“ 100.33 2.309 11 98.351 97.372 1.479 97.75G 3 3/4 3 3/4“ 106.68 2.309 11 105.201103.722 1.479 104G 4 4“ 113.03 2.309 11 111.55 110.072 1.479 110.5G 4 1/2 4 1/2“ 125.73 2.309 11 124.251122.772 1.479 123G 5 5“ 138.43 2.309 11 136.951135.472 1.479 136G 5 1/2 5 1/2“ 151.13 2.309 11 149.651148.172 1.479 148.5G 6 6“ 163.83 2.309 11 162.351160.872 1.479 161.5
