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国标热镀锌钢管规格、尺寸、理论重量表规格公称内径DN15DN20DN25DN32DN40DN50DN65DN80DN100DN125DN150DN200DN200英寸1/23/411.251.522.534568821.326.933.742.448.360.376.188.9114.3140168.3219.1219.12.82.83.23.53.53.84444.54.56（焊管）6.5（热镀锌）2.452.452.83.063.063.3253.51.281.662.413.363.875.297.118.3810.8815.0418.1831.537.689.9614.4620.1623.2231.7442.6650.2865.2890.24109.08189.1836.12216.721.3571.762.5543.564.15.6077.5368.8811.5315.94219.278.1410.5615.3221.3624.633.6445.2153.2869.1898.65115.62外径mm壁厚mm最小壁厚mm焊管（6米定尺）米重kg根重kg镀锌管(6米定尺）米重kg根重kg