管道螺紋分為英制管道螺紋，美式管道螺紋和公制管道螺紋。今天，我將為您提供一門通俗的科學知識，管螺紋的標準尺寸是多少，供您參考。錐形管螺紋的標準尺寸參數(shù)：尺寸代碼每25.4mm級的齒數(shù)n螺距p輪廓高度h弧半徑r≈基面上的基本直徑參考距離有效螺紋長度大直徑（參考直徑）d = D中直徑d2 = D2小直徑d1 = D11 / 16280.9070.5810.1257.7237.1426.5614.06.51 / 8280.9070.5810.1259.7289.1478.5664.06.51 / 4191.3370.5860.18413.15712.30111.4456.09.73 / 8191.3370.5860.18416.66215.80614.9506.410.11 / 11 2141.8141.1620.24920.95519.79318.6318.213.23 / 4141.8141.1620.24926.44125.27924.1179.514.51112.3091.4790.31733.24931.77030.29110.416.81.1 / 4112.3091.4790.31741.91040.43138.95212.719.11.1 / 2112.3091.4790.31747.80346.32444.8512.719.12112.309790 61458.13556.65615.923.42.1 / 2112.3091.4790.31775.18473.70572.22617.526.73112.3091.4790.31787.88486.40584.92620.6290.683.1 / 2112.3091.4790.317100.33098.85197.37222.231.44112.3091.4790.317113.030111.551110.47225.435.851317.3091.4910 1.11。 4790.317163.830162.351160.87228.640.1