常用镀锌管规格表常用镀锌管规格表公称口径外径MM68101520253240506580100125150说明MM壁厚MM镀锌管壁黑铁管增加的重量系数普通钢管加厚钢管1.01.0591.0561.0461.0561.0461.0471.0391.0461.0391.0391.0321.0391.0321.0361.031.0361.0281.0341.0281.0321.0271.0321.0261.0281.0231.0281.023注释10213.52.75173.521.33.1526.83.433..22.35.18460575.55.2588..2511471407.51657.5W=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S--黑铁管的壁厚
