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国标镀锌管规格规格外径 mm壁厚 mm最小壁厚 mm焊管（6 米定尺）镀锌管（6 米定尺）公称内径英寸米重 kg根重 kg米重 kg根重 kgDN151/221.32.82.451.287.681.3578.14DN203/426.92.82.451.669.961.7610.56DN25133.73.22.82.4114.462.55415.32DN321.2542.43.53.063.3620.163.5621.36DN401.548.33.53.063.8723.224.1024.60DN50260.33.83.3255.2931.745.60733.64DN652.576.14.03.57.1142.667.53645.21DN80388.94.08.3850.288.8853.28DN1004114.34.010.8865.2811.5369.18DN12551404.515.0490.2415.94298.65DN1506168.34.518.18109.2719.27115.62DN2008219.16.0（焊 管）31.53189.18DN2008219.16.5（热 镀锌）36.12216.72