.045 10100 485.3 8.5 12.748 10.007 12.6 126 535.5 915.692 12.318 14a 140 5869.5 18.516 14.535 14b 140 6089.5 21.316 16.733 热轧扁钢( GB704 - 83) 宽度/mm 厚度/mm 345678910 理论质量/Kg ·Km-1 250.59 0.78 0.98 1.18 1.37 1.57 1.77 1.96 300.71 0.94 1.18 1.41 1.65 1.88 2.12 2.36 350.82 1.1 1.37 1.65 1.92 2.2 2.47 2.75 400.94 1.26 1.57 1.88 2.2 2.51 2.83 3.14 451.06 1.41 1.77 2.12 2.47 2.83 3.18 3.53 501.18 1.57 1.96 2.36 2.75 3.14 3.53 3.93 常用热轧等边角钢( GB- 9786 - 86) 型号尺寸/mm 截面面积/cm2 理论质量/Kg ·Km -1 bdr 2 20 33.5 1.132 0.889 41.459 1.145 2.5 25 31.432 1.124 41.859 1.459 3 30 34.5 1.749 1.373 42.276 1.786 3.6 36 32.109 1.656 42.756 2.163 53.382 2.654 4 40 35 2.359 1.852 43.086 2.422 53.791 2.976 4.5 45 32.659 2.088 43.486 2.736 54.292 3.369 65.076 3.985 5 50 35.5 2.971 2.332 43.897 3.059 54.803 3.77 65.688 4.465
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