常用钢管规格对照表

1.无缝钢管、焊接钢管（直缝或螺旋缝）、铜管、不锈钢管等管材，管径宜以D×δ(外径×壁厚)表示；2.本表适用的钢管外径包括A、B两个系列，A系列为国际通用系列（俗称英制管）、B系列为国内沿用系列（俗称公制管）。公称直径DN1520253240506580100125150200250300350400450500600英制1/2\"3/4\"1\"1 1/4\"1 1/2\"2\"2 1/2\"3\"4\"5\"6\"8\"10\"12\"14\"16\"18\"20\"24\"钢管外径DA21.326.933.742.448.360.376.188.9114.3139.7168.3219.1273323.9355.4406.4457508610B18253238455776891081331592192733253774264805306302.50.9561.391.762.192.623.364.535.336.5 - - - - - - - - -31.111.632.152.593.1145.46.367.77 - - - - - - - - -3.51.251.862.462.983.584.626.267.389.02 - - - - - - - - -41.382.072.763.354.045.237.18.3810.2612.73 - - - - - - - -常用壁厚δ（mm）的理论重量（公斤／米）4.51.52.283.053.724.495.837.939.3811.4914.2617.15 - - - - - - -51.62.473.334.074.936.418.7510.3612.715.7818.99 - - - - - - -2.813.854.745.777.5510.3612.2815.0918.7922.6431.52 - - - - - -3.114.325.356.568.6311.9114.1617.4421.7526.2436.645.92 - - - - - -4.475.957.39.6713.1215.9819.7324.6629.7941.6352.2862.54 - - - - - -7.9910.6514.3717.7621.9727.5233.2946.6158.670.1481.6892.55104.54115.62 - - - - -30.3336.7551.5464.8677.6890.51102.59115.9128.2335.8143.561.2677.2492.63108.02122.52139.49154.2967891012