45*45*5冷拉T型钢现货***电梯导轨专用冷拉T型钢50*50*5一支起售热轧T型钢型号规格米重型号规格理算20*320*20*30.9420*420*20*41.2625*325*25*31.1825*425*25*41.5730*330*30*31.4130*430*30*41.8835*335*35*31.6535*435*35*42.240*440*40*42.5140*540*40*53.1445*445*45*42.8345*545*45*53.5345*645*45*64.2450*450*50*43.1450*550*50*53.9350*650*50*64.7160*660*60*65.6560*760*60*76.5936*6036*60*53.7736*60*836*60*845*45*5冷拉T型钢现货***电梯导轨专用冷拉T型钢50*50*5一支起售规格：40*40*4/50*50*5/45*45*5工艺：冷拉用途：电梯导轨)