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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 1/161/167.7230.907287.1426.5610.5810.1256.4R 1/81/89.7280.907289.1478.5660.5810.1258.4R 1/41/413.1571.3371912.30111.4450.8560.18411.2R 3/83/816.6621.3371915.80614.9500.8560.18414.75R 1/21/220.9551.8141419.79318.6311.1620.24918.25R 3/43/426.4411.8141425.27924.1171.1620.24923.75R 1133.2492.3091131.7730.2911.4790.31730R 1 1/41 1/441.9102.3091140.43138.9521.4790.31738.5R 1 1/21 1/247.8032.3091146.32444.8451.4790.31744.5R 2259.6142.3091158.13556.6561.4790.31756R 2 1/22 1/275.1842.3091173.70572.2261.4790.31771R 3387.8842.3091186.40584.9261.4790.31785.5R 44113.0302.30911111.551110.0721.4790.317110.5R 55138.4302.30911136.951135.4721.4790.317136R 66163.8302.30911162.351160.8721.4790.317161.555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 1/89.7280.907289.1478.5660.5818.7G 1/4 1/413.1571.3371912.30111.4450.85611.6G 3/8 3/816.6621.3371915.80614.950.85615G 1/2 1/220.9551.8141419.79318.6311.16219G 5/8 5/822.9111.8141421.74920.5871.16220.75G 3/4 3/426.4411.8141425.27924.1171.16224.5G 7/8 7/830.2011.8141429.03927.8771.16228G 1 133.2492.3091131.7730.2911.47930.5G 1 1/8 1 1/837.8972.3091136.41834.9391.47935G 1 1/4 1 1/441.912.3091140.43138.9521.47939.5G 1 3/8 1 3/8 44.3232.3091142.84441.3651.47941.5G 1 1/2 1 1/247.8032.3091146.32444.8451.47945G 1 3/4 1 3/453.7462.3091152.26750.7881.47951G 2 259.6142.3091158.13556.6561.47957G 2 1/4 2 1/465.712.3091164.23162.7521.47963G 2 1/2 2 1/275.1842.3091173.70572.2261.47972.5G 2 3/4 2 3/481.5342.3091180.05578.5761.47979G 3 387.8842.3091186.40584.9261.47985.G 3 1/4 3 1/493.982.3091192.50191.0221.47991G 3 1/2 3 1/2100.332.3091198.35197.3721.47997.75G 3 3/4 3 3/4106.682.30911105.201103.7221.479104G 4 4113.032.30911111.55110.0721.479110.5G 4 1/2 4 1/2125.732.30911124.251122.7721.479123G 55138.432.30911136.951135.4721.479136G 5 1/2 5 1/2151.132.30911149.651148.1721.479148.5G 6 6163.832.30911162.351160.8721.479161.555度圆锥管螺纹的实际加工尺寸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 1/89.7280.907289.1478.5660.5818.7G 1/4 1/413.1571.3371912.30111.4450.85611.6G 3/8 3/816.6621.3371915.80614.950.85615G 1/2 1/220.9551.8141419.79318.6311.16219G 5/8 5/822.9111.8141421.74920.5871.16220.75G 3/4 3/426.4411.8141425.27924.1171.16224.5G 7/8 7/830.2011.8141429.03927.8771.16228G 1 133.2492.3091131.7730.2911.47930.5G 1 1/8 1 1/837.8972.3091136.41834.9391.47935G 1 1/4 1 1/441.912.3091140.43138.9521.47939.5G 1 3/8 1 3/8 44.3232.3091142.84441.3651.47941.5G 1 1/2 1 1/247.8032.3091146.32444.8451.47945G 1 3/4 1 3/453.7462.3091152.26750.7881.47951G 2 259.6142.3091158.13556.6561.47957G 2 1/4 2 1/465.712.3091164.23162.7521.47963G 2 1/2 2 1/275.1842.3091173.70572.2261.47972.5G 2 3/4 2 3/481.5342.3091180.05578.5761.47979G 3 387.8842.3091186.40584.9261.47985.G 3 1/4 3 1/493.982.3091192.50191.0221.47991G 3 1/2 3 1/2100.332.3091198.35197.3721.47997.75G 3 3/4 3 3/4106.682.30911105.201103.7221.479104G 4 4113.032.30911111.55110.0721.479110.5G 4 1/2 4 1/212
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