C型钢的规格型号及理论重量答:1,槽80x40x15x2.0,80,40,15,2,14.52,33.6,347,341600,77900,462,112900000 2,槽100x50x15x2.5,100,50,15,2.5,17.06,39.4,523,813400,171900,1090,352800000 3,槽120x50x20x2.5,120,50,20,2.5,17.06,40.3,598,1294000,209600,1246,660900000 4,槽120x60x20x3.0,120,60,20...