常用钢材规格表 一、热轧等边角钢 型号 尺寸（mm） 截面面积（cm2） 理论质量（kg/m） 允许偏差 长度(m ) 边宽 边厚 边宽 边厚 2 20 3 1.132 0.889 ±0.8 ±0.4 4~12 4 1.459 1.145 2.5 25 3 1.432 1.124 4 1.859 1.459 3.0 30 3 1.749 1.373 4 2.226 1.786 3.6 36 3 2.109 1.656 4 2.756 2.163 5 3.382 2.654 4 40 3 2.359 1.852 4 3.086 2.422 5 3.791 2.976 4.5 45 3 2.659 2.088 4 3.486 2.736 5 4.292 3.369 6 5.076 3.985 5 50 3 2.971 2.332 4 3.897 3.059 5 4.803 3.770 6 5.688 4.465 5.6 56 3 3.343 2.624 4 4.390 3.446 5 5.415 4.251 8 8.367 6.568 6.3 63 4 4.978 3.907 ±1.2 ±0.6 5 6.143 4.822 6 7.288 5.721 8 9.515 7.469 10 11.657 9.151 7 70 4 5.570 4.372 5 6.875 5.397 6 8.160 6.406 7 9.424 7.398 8 10.667 8.373 7.5 75 5 7.412 5.818 6 8.797 6.905 7 10.160 7.976 8 11.503 9.030 10 14.126 11.089 8 80 5 7.912 6.211 6 9.397 7.736 7 10.680 8.525 8 12.303 9.658 10 15.126 11.874 9 90 6 10.637 8.350 7 12.301 9.656 8 13.944 10.946 10 17.167 13.476 12 20.306 15.940 10 100 6 11.936 9.366 ±1.8 ±0.7 4~19 7 13.796 10.830 8 15.638 12.276 10 19.261 15.120 12 22.800 17.898 14 26.256 20.611 16 29.627 23.257 11 110 7 15.196 11.928 8 17.238 13.532 10 21.261 16.690 12 25.200 19.782 14 29.256 22.809 12.5 125 8 19.750 15.504 10 24.373 19.133 12 28.912 22.696 14 33.367 26.193 14 140 10 27.373 21.488 12 32.512 25.522 14 37.567 29.490 16 42.539 33.393 16 160 10 31.502 24.729 ±2.5 ±1.0 6~19 12 37.441 29.391 14 43.296 33.987 16 49.067 38.518 18 180 12 42.241 33.159 14 48.896 38.383 16 55.467 43.542 18 61.955 48.634 20 200 14 54.642 42.894 16 62.013 48.680 18 69.301 54.401 20 76.505 60.056 24 90.661 71.168 二、热轧不等边角钢 型号 尺寸(mm) 截面面积(cm2) 理论质量(kg/m) 长边 短边 边厚 r 2.5/1.6 25 16 3 3.5...
