方钢管重量规格型号1012.614151820a20b22a22b25a25b28a28b32a32b32c36a36b36c40a40b40c45a45b45c50a50b50c56a56b56c63a63b63c尺寸长100126140300200200200220220250250280280320320320360360360400400400450450450500500500560560560630630630宽687480200300100102110112116118122124130132134136138140142144146150152154158160162166168170176178180壁厚4.555.566797.59.58108.510.59.511.513.510121410.512.514.511.513.515.512141612.514.516.5131517理论重量11.8715.7019.0047.1047.1032.9742.6738.8649.5245.9757.7853.6566.6067.1281.6196.2377.8793.82109.9089.35106.76124.30108.33127.59146.98123.97145.07166.29142.48165.73189.11164.50190.28216.19规格型号8尺寸高度80规格型号101214161818a2020a2222a2424a2727a3030a33364045505560657070a70b尺寸高度100120140160180180200200220220240240270270300300330360400450500550600650700700700方钢管重量腿宽5564738190100100110110120115125125135135145140145155160170180190200210210210腰厚4.54.84.955.15.15.25.25.45.45.65.6666.56.577.588.69.510.311.112131517.5热轧8#轻型工字钢尺寸及重量（据YB(T)65-87）腿宽50腰厚4.5计算公式：W(kg/m)=0.00785*腰厚*[高+f*(腿宽-腰厚）]W(kg/m)=0.00785*腰厚*[高+f*(腿宽-腰厚）]理论重量9.4611.513.715.918.419.92122.72425.827.329.431.533.936.539.242.248.656.165.276.889.81041201381581845-87）理论重量7.52