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.公称通径与英寸对照表规格大外径壁厚最小壁厚焊管 (6米定尺 )镀锌管 (6 米定尺 )公称内径英寸mmmmmm米重 kg根重 kg米重 kg根重 kgDN151/221.32.82.45DN203/426.92.82.451.669.961.7610.56DN25133.73.22.82.4114.462.55415.32DN321.2542.43.53.063.3620.163.5621.36DN401.48.33.53.063.8723.224.1024.60DN50260.33.83.3255.2931.745.60733.64DN652.576.14.03.57.1142.667.53645.21DN80388.94.08.3850.288.8853.28DN1004114.34.010.8865.2811.5369.18DN12551404.515.0490.2415.94298.65DN1506168.34.518.18109.0819.27115.62DN2008219.16.0( 焊管 )31.53189.18DN2008219.16.5( 热镀锌 )36.12216.7.