常用镀锌管规格表公称口径外径MM68101520253240506580100125150说明MM1013.51721.326.833.542.3486075.588.5114140165壁厚MM22.753.53.153.44.255.15455.254.2577.57.5镀锌管壁黑铁管增加的重量系数普通钢管1.01.0561.0561.0471.0461.0391.0391.0361.0361.0341.0321.0321.0281.028加厚钢管1.0591.0461.0461.0391.0391.0321.0321.031.0281.0281.0271.0261.0231.023W=C*[0.02466*(D-S)*S]W--镀锌管每米重量：kg/mC--镀锌管比黑铁管增加的重量系数D--黑铁管的外径注释S--黑铁管的壁厚
