管螺纹尺寸对照表(全)

1/16280.9070.5811分1/8280.9070.5812分DN81/4191.3370.5863分3/8191.3370.5864分DN151/221.32.82.45141.8141.1626分DN203/426.92.82.45141.8141.1621寸DN25133.73.22.8112.3091.4791.2寸DN321.1/442.43.53.06112.3091.4791.5寸DN401.1/248.33.53.06112.3091.4792寸DN50260.33.83.325112.3091.4792.5寸DN652.1/276.143.5112.3091.4793寸DN80388.94112.3091.4793.5寸3.1/2112.3091.4794寸DN1004114.34112.3091.4795寸DN12551404.5112.3091.4796寸DN1506168.34.5112.3091.4798寸DN2008219.110寸DN250大径（基准直径）d=D中径d2=D21/16277.8957.1421/82710.2429.4891/41813.61612.4873/81817.05515.9261/21421.22319.7723/41426.56825.11711233.22831.4611.1/41241.98540.2181.1/21248.05446.28721260.09258.3252.1/2872.69970.1593888.60886.0683.1/28101.31698.77648113.973111.433最小壁厚每25.4mm类的牙数n螺距p牙型高度h管螺纹的基本尺寸表（3-29）G1/2、ZG1/2、（以焊管、镀锌管为例）通称尺寸对应口径尺寸代号外径壁厚1英寸=25.4mm=8分以上壁厚尺寸以焊管、镀锌管理论重量为例（按GB/T3091-2001标准执行）锥管螺纹的基本尺寸表（3-28）1/2PT、1/2NPT、尺寸代号每25.4mm类的牙数n基面上的基本直径大径（基准直径）d=D中径d2=D2小径d1=D10.1257.7237.1426.56146.50.1259.7289.1478.56646.50.18413.15712.30111.44569.70.18416.66215.80614.950610.10.24920.95519.79318.631813.20.24926.44125.27924.1171014.50.31733.24931.77030.2911016.80.31741.91040.43138.9521319.10.31747.80346.32444.8451319.10.31759.61458.13556.6561623.40.31775.18473.70572.2261826.70.31787.88486.40584.9262129.80.317100.33098.85197.3722231.40.317113.030111.551110.0722535.80.317138.430136.951135.4722940.10.317163.830162.351160.8722940.1小径d1=D16.3894.0648.7364.10211.3585.78614.7976.09618.3218.12823.6668.61129.69410.16038.45110.66844.52010.66856.55811.07467.61917.32383.52819.45696.23620.853108.89321.438圆弧半径r≈基面上的基本直径基准距离有效螺纹长度管螺纹的基本尺寸表（3-29）G1/2、ZG1/2、（以焊管、镀锌管为例）1英寸=25.4mm=8分以上壁厚尺寸以焊管、镀锌管理论重量为例（按GB/T3091-2001标准执行）锥管螺纹的基本尺寸表（3-28）1/2PT、1/2NPT、基面上的基本直径基准距离