各国标准螺纹基本尺寸对照表

各国标准螺纹基本尺寸对照表

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时间:2018-10-25

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1、word资料下载可编辑英制管螺纹基本尺寸及公差(牙形角55º)BSPP螺纹代号基本直径内螺纹外螺纹大径中径小径中径公差小径公差A级B级中径公差大径公差中径公差大径公差G1/8″×289.7289.1478.566+0.170+0.28200-0.1070-0.2140-0.2140-0.214G1/4″×1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8″×1916.66215.80614.950+0.1250+0.44500-0.1250-0.2500-0.2500-0.25

2、0G1/2″×1420.95519.79318.631+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G5/8″×1422.91121.74920.587+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G3/4″×1426.44125.27924.117+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G1″×1133.24931.77030.291+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/4

3、″×1141.91040.43138.952+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/2″×1147.80346.32444.854+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2″×1159.61458.13556.656+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2.1/2”X1175.18473.70572.226+0.2170+0.64000-0.2170-0.4340-0.4340-0.434G3”X118

4、7.88486.40584.926+0.2170+0.64000-0.2170-0.4340-0.4340-0.434G3.1/2”X11100.33098.85197.372+0.2170+0.64000-0.2170-0.4340-0.4340-0.434英制锥管螺纹基本尺寸及公差(牙形角55º)BSPT螺纹代号基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向位移偏差(±mm)大径中径小径基本最大最小基本最大最小R1/8″×289.7289.1478.5664.04.93.16.57.45.61.1R1/4″×1913.15712.30111

5、.4456.07.34.79.711.08.41.7R3/8″×1916.66215.80614.9506.47.75.110.111.48.81.7R1/2″×1420.95519.79318.6318.210.06.413.215.011.42.3R3/4″×1426.44125.27924.1179.511.37.714.516.312.72.3R1″×1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4″×1141.91040.43138.95212.715.010.419.121.416

6、.82.9R1.1/2″×1147.80346.32444.84512.715.010.419.121.416.82.9R2″×1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.23.5专业技术资料word资料下载可编辑R3”X1187.88486.40584.92620.624.117.129.833.326.33.5R3.1/2”X11100.33098.85197.37222.225.718.731

7、.434.927.93.5美制管螺纹基本尺寸及公差(牙形角60º)UN(F)螺纹代号外螺纹内螺纹公差等级公差等级2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC螺纹7/16″×20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.1131/2″×20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.79/16″×18UNF14.25214.03113.33513.22112.57312.751

8、13.08113.37113.5214.2883/4″×16UNF19.01218.77317.98117.85417.1

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