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 对铁塔构件热镀锌锌层厚度要求,见表4-73~表4-77。表4-73板材、圆钢铁塔材锌层厚度的控制板材圆钢序号规格/mm表面积/m2·t-1锌层厚度/kg·t-1序号规格φ/mm表面积/m2·t-1锌层厚度/kg·t-11463.6929.3~41.011146.1229.8~44.12551.0031.1~43.521242.8927 (共 2441 字) [阅读本文] >>