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1、 55圆锥管螺纹(SPT）螺纹代号 基本尺寸 英 寸大径 md=D螺距 mp每英寸牙数tp中径 md2=D小径 外螺纹3牙型高度H1圆弧尺寸 r底孔尺寸 m 1161/16.7230.9087.14265610.5810.16R 1/8/89.7280.90728978.5660.581.28.4R 1/41/43.151.33123011.450.8560.184112R 838161.311501.950.85608.R /222951.1119.7931.6311.16224918.25R 3/442.44111145.924.17.162.92375R 11.242.3111.73.2
2、1.4790.31730R 11 1/441.902.30910.431895214790.31738.R 1 121 /247.8032.0914.32444.8451790.3174.5 2259.61420918156.647031756R2 1/2 1/25.142.3013.7057222.491771R37.842.3164584.9261790.3785R44113.032.0911115511100721.490.37110.5R 55138.4302.30111691135.421.0.3171R6163.3031162316071.401716.55圆柱管螺纹的型式和尺寸B
3、ih ie head (惠氏管螺纹） 圆柱 (BSP/BSPF） 螺纹代号基本尺寸大径mdD螺距mmp每英寸牙数ti中径mmd2D2小径外螺纹d3牙型高度底孔尺寸mm 11/97280.989.1478660.5818.G 4 141.157.33719.3011.50.85611.6G /8 /86.621.33791.064.950.85615G 1/21/220.9551.811979386311.16219/8 5/822.111.14421792.87.1227G /43/426.411.812.2792.11.1622.5G7/8 7/8.201841429.03927.87762
4、28G 1 13.2492.91131.730.2911.4793.5G 1/8 1/37.8723091361834.991.473G 1 1/4 1 141.912.09140.4318.95214395 1 3/8 1 38 4.3232.30912844.3651.471.5G11/2 /4.8032.09114624484514795G/41 /457462.31152.275071.495G 2 59.142.30918.1356.51.47957G 2 /4 2 1/465.712391142317521.49632 2 2 1/27584209117.705722261.77.
5、5G 2/4 2 341.53.309118.055771.47979G 3 3.8840916.40584.9261.4785.G 1/4 9.9.3091192.5091.021.4991 /2 3/100.32.091198.319.3721.47.7G 3/ 3/06.68230911105.20110.721.49104G 413.3309111.55110.021.479110.5 1 4 12.3.091124.51277.479123 538432.3091136.911.41.471365 125 /21.230914965114171.7948.5G 66382.30911
6、2.311.721.4911.55度圆锥管螺纹的实际加工尺寸圆柱管螺纹的型式和尺寸British PipeThread（惠氏管螺纹) - 圆柱 (BPP/BSF) 螺纹代号基本尺寸大径mmd=D螺距p每英寸牙数ti中径d2=D2小径外螺纹3牙型高度H1底孔尺寸mG 1/8 1/89.2007289.1478.560.818.7G 1/4 1/13.1571337912.3111.455611.6 3/8 3/8.662331915.8014.950.8515G1/2 1220.958141419.79318.611.219G8 522.11.811421.74205871.120.5 4/64
7、411.14125.279.111.6224G/8 7/830.211.11429.039277116228G 133.29.3013.70.2911.470.5G/ 18.897230911.84.939.4935G 1/4 1.91230110.431389521.4799.13/ 3/8 4.3232.3914.4441.35.47941.5G 1 1/ 11/247.802.39116.2444.845.794G 1 3/4 1 43.7462091152.2670.8147951G 2 2.142.09151356.6561.457G 2 1/4 2 14.72.30164.3.75
8、147963G 2 / 1275.42.311730572.261.479725G 23/ 2 3/481534.3091180.0557574779 387.884.30118.40584.1.4785.G 3 1/ 1/.230192.591.022.47991G 31/ 1/21003323098.319.21.479.53 3/4 3340.8.31105.201132.47904 11032391111.5511071.7911.5G41/2 4 1257.3091124.2511719G 5138.432.3091136.9135.41.47136G 1/ 5 /51.13.0995148721.18.5 66.832.391162.35160.8279165
55度管螺纹标准尺寸对照表
