镀锌管尺寸表规格 外径mm壁厚mmzui小壁厚mm 公称内径英寸 米重kgDN151/2 4分21.32.82.451.76DN203/4 6分26.92.82.452.554DN25133.73.22.83.56DN321.2542.43.53.064.1DN401.548.33.53.065.607DN50260.33.83.3257.536DN652.576.143.58.88DN80388.94 11.53DN1004114.34 15.942DN12551404.5 19.27DN1506168.34.5 DN2008219.16.5（热锌） 36.12
