镀锌钢管常用规格公称口径外径壁厚镀锌管壁黑铁管增添的重量系数MMMMMM通俗钢管加厚钢管610.021.0641.059813.52.751.0561.0461017.03.501.0561.0461521.33.151.0471.0392026.83.401.0461.0392533.54.251.0391.0323242.35.151.0391.0324048.04.001.0361.0305060.05.001.0361.0286575.55.251.0341.0288088.54.251.0321.027100114.07.001.0321.026125140.07.501.0281.023150165.07.501.0281.023申明：W=C*[0.02466*(D-S)*S]W--镀锌管每米重量：k/mC--镀锌管比黑铁管增添的重量系数D--黑铁管的外径S--黑铁管的壁厚

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