单位面积风管重量计算表主要风管重量提资序号型号钢材mm理论重量KG/m2表面积保温体积保温重量合计KG/m2运行重量宽高1800100017.853.60.1085.18441.80562.70752100018001.29.425.60.1688.06460.81691.224380015001.29.424.60.1386.62462.44593.6675415008001.29.424.60.1386.62433.30449.9565100050017.8530.094.3227.8741.80561000100017.8540....