C型钢基本尺寸与主要参数国标 GB/T6725-2002
名称 尺寸 惯性矩cm4 l回转半矩 截面模数cm4
h×b×c×t h b c t lx ly rx ry wx wy
80×40×15×2.5 80 40 15 2.5 41.39 9.326 3.117 1.479 10.35 6.432
100×50×20×2.5 100 50 20 2.5 84.93 19.89 3.925 1.899 16.99 10.73
120×50×20×2.5 120 50 20 2.5 130.7 21.26 4.633 1.880 21.78 12.44
140×50×20×2.5 140 50 20 2.5 188.5 22.42 5.380 1.885 26.93 74.12
140×60×20×2 140 60 20 2 219.848 25.733 5.345 1.828 31.406 7.532
150×50×20×2 150 50 20 2 370.766 39.975 5.713 1.874 49.435 23.678
150×60×20×2 150 60 20 2 357.227 70.223 5.974 2.671 46.830 28.327
160×60×20×2 160 60 20 2 339.955 47.989 6.182 2.172 42.494 10.109
160×60×20×3 160 60 20 3 339.955 41.99 6.182 2.172 42.49 22.74
160×70×20×3 160 70 20 3 376.9 61.27 6.300 2.540 47.11 27.48
180×60×20×2 180 60 20 2 449.695 43.611 6.881 2.143 49.966 10.235
180×60×20×3 180 60 20 3 449.6 43.61 6.881 2.143 49.97 25.07
180×70×20×2 180 70 20 2 496.693 63.712 7.074 2.512 55.188 13.019
180×70×20×3 180 70 20 3 496.6 63.71 7.014 2.512 55.19 30.25
200×60×20×2 200 60 20 2 573.425 45.014 7.569 2.112 57.842 10.342
200×60×20×3 200 60 20 3 578.4 45.04 7.569 2.112 57.84 27.38
200×70×20×2 200 70 20 2 636.643 65.883 7.715 2.481 63.644 73.167
200 ×70×20×3 200 70 20 3 636.6 65.88 7.715 2.481 63.66 32.99
220×70×20×2.5 220 70 20 2.5 743.5 68.75 7.755 2.657 66.45 31.98
250×75×20×2 250 75 20 2 898.495 70.309 9.753 3.156 69.879 25.674
250×75×20×2.5 250 75 20 2.5 989.871 72.706 9.189 3.275 71.190 29.846
300×40×15×3 300 40 15 3 1231 75.36 10.31 1.150 82.11 21.70
300×80×25×3 300 80 25 3 1125.377 85.605 10.273 3.852 79.560 32.421
380×110×30×4 380 110 30 4 1301.225 99.818 72.743 4.125 86.765 39.574
400×50×15×3 400 50 15 3 2837 28.89 13.67 1.378 147.9 36.88
注：特殊规格型钢可在下列尺寸中任意调节 h：50～400(mm) b：30—110(mm) t：1.5～5.0(mm)并可生产不等边C型钢
