?常用材料尺寸---工字钢尺寸五工字钢单位重量表热轧普通工字钢每米重量表型????? 号尺寸(毫米)截面面积(厘米2)理论重量(公斤米)hbdtr1 10100684.57.63.314.311.212.61267458.43.518.114.214140805.59.13.821.516.9161608869.9426.120.518180946.510.74.330.624.120a20