镀锌钢管换算公式规格DN15DN20DN25DN32DN40DN50DN65DN80DN100DN125DN150DN200DN250DN300外径mm21.326.933.742.448.360.376.188.9114.3139.7168.3219273325壁厚mm2.82.83.23.53.53.844444.5678理论重量kg/m1.33361.73732.50313.4754.0026.98877.33958.2511.228213.813818.685832.1458计算重量kg/m1.27751.622.40703.35773.86695.29487.11248.375110.880713.386318.178031.517545.919862.5417长度m11111111111111理论每千克几米0.74990.57560.39950.28780.24990.14310.13620.11570.010.07240.05350.0311公式计算每千克几米0.78280.60090.41550.29780.25860.180.14060.11940.09190.07470.05500.03170.02180.0160单价kg/元4.694.594.544.544.494.494.494.494.494.594.594.594.594.59理论单价m/计算单价m/元元6.255.997.9711.3615.7817.9731.3832.9538.8050.4163.4185.77147.55210.77287.077.10.9315.2417.3623.7731.9337.6048.8561.4483.44144.67210.77287.07
