[5 I 10 [6.3 I 12 [6.5 I 12.6 [8 I 14 [10 I 16 [12 I 18 [12.6 I 20a [14a I 20b [14b I 22a [16a I 22b [16 I 24a [18a I 24b [18 I 25a [20a I 25b [20 I 27a [22a I 27b [22 I 28a [24a I 28b [24b I 30a [24c I 30b [25a I 30c [25b I 32a [25c I 32b [27a I 32c [27b I 36a [27c I 36b [28a I 36c [28b I 40a [28c I 40b [30a I 40c [30b I 45a [30c I 45b [40a I 45c [40b [40c边宽度b边厚度d长边宽B短边宽b边厚d ∠30*30*3 ∠75*50*6 ∠25*25*4 ∠63*40*51.51.50.6型号尺寸（∠b*b*d）允许偏差mm型号尺寸（∠B*b*d）允许偏差mm ∠25*25*30.80.4400*102*12.5*18工字钢腿平均厚度[(b-d)/4处]的允许偏15%腰厚；外形弯曲每米≤2mm，总长弯曲≤总长度明显扭转。400*104*14.5*18等边角钢 允差GB/T 706-2008不等边角钢 允许偏差GB/T 706-2008280*86*11.5*12.5400*144*12.5*16.5300*85*7.5*13.5450*154*15.5*18.0400*146*14.5*16.5300*87*9.5*13.5450*150*11.5*18.0300*89*11.5*13.5450*152*13.5*18.0280*82*7.5*12.5360*140*14.0*15.8280*84*9.5*12.5400*142*10.5*16.5400*100*10.5*18±4.0*±4.0*±0.9270*82*7.5*12.5320*134*13.5*15.0270*84*9.5*12.5360*136*10.0*15.8270*86*11.5*12.5360*138*12.0*15.8250*82*11.0*12.0320*132*11.5*15.0250*78*7.0*12.0300*130*13.0*14.4250*80*9.0*12.0320*130*9.5*15.0240*80*9.0*12.0300*126*9.0*14.4240*82*11.0*12.0300*128*11.0*14.4220*79*9.0*11.5280*122*8.5*13.7270*124*10.5*13.7200*75*9.0*11.0270*122*8.5*13.7200*73*7.0*11.0±3.0*±3.0*±0.7250*118*10.0*13.0220*77*7.0*11.5240*78*7.0*12.0280*124*10.5*13.7180*70*9.0*10.5250*116*8.0*13.0240*118*10.0*13.0160*65*8.5*10.0240*116*8.0*13.0160*63*6.5*10.0±2.0*±2.5*±0.5220*112*9.5*12.3180*68*7.0*10.5200*102*9.0*11.4140*60*8.0*9.5220*110*7.5*12.3 180*94*6.5*10.7126*53*5.5*9.0200*100*7.0*11.4140*58*6.0*9.580*43*5.0*8.0 140*80*5.5*9.1100*48*5.3*8.5±2.0*±2.0*±0.5 160*88*6.0*9.9120*53*5.5*9.063*40*4.8*7.5 120*74*5.0*8.465*40*4.3*7.5 126*74*5.0*8.450*37*4.5*7.0±1.5*±1.5*±0.4 100*68*4.5*7.6规格尺寸mm允许偏差mm常 用 钢 铁 材 料 外 槽 钢 允许偏差 GB/T 706-20...
