冷弯等边角钢 GB 6723-86
弯曲部分的内圆弧半径应符合下表规定
(所有冷弯型材均同):
N/mm2 | 圆弧半径r,mm | |
t≤4.0 | 4.0<t≤8.0 | |
≤235 | ≤1.4t | ≤1.8t |
≤275 | ≤1.8t | ≤2.4t |
≤350 | ≤2.4t | ≤3.0t |
>350 | 双方协议 |
表3-1-62
名称 | 尺寸mm | 理论重量 kg/m | 截面面积 | 重心 cm | 惯性矩,cm4 | 回转半径,cm | 截面模数,cm3 | ||||||
b×b×t | b | t | cm2 | Y0 | Ix= Iy | Iu | Iv | rx=ry | ru | rv | Wxmax= Wymax | Wymin= Wxmin | |
20×20×1.2 20×20×1.6 20×20×2.0 | 20 | 1.2 1.6 2.0 | 0.354 0.463 0.566 | 0.451 0.589 0.721 | 0.559 0.579 0.599 | 0.179 0.230 0.278 | 0.292 0.377 0.457 | 0.066 0.084 0.099 | 0.063 0.625 0.621 | 0.804 0.800 0.796 | 0.385 0.377 0.371 | 0.321 0.398 0.464 | 0.125 0.162 0.198 |
25×25×1.6 25×25×2.0 25×25×2.5 25×25×3.0 | 25 | 1.6 2.0 2.5 3.0 | 0.588 0.723 0.885 1.039 | 0.749 0.921 1.127 1.323 | 0.704 0.724 0.749 0.774 | 0.464 0.563 0.679 0.786 | 0.756 0.922 1.117 1.298 | 0.172 0.205 0.242 0.275 | 0.786 0.782 0.776 0.770 | 1.004 1.000 0.995 0.990 | 0.479 0.472 0.463 0.456 | 0.659 0.778 0.907 1.106 | 0.258 0.317 0.388 0.455 |
30×30×1.6 30×30×2.0 30×30×2.5 30×30×3.0 | 30 | 1.6 2.0 2.5 3.0 | 0.714 0.880 1.081 1.274 | 0.909 1.121 1.377 1.623 | 0.829 0.849 0.874 0.898 | 0.817 0.998 1.210 1.409 | 1.328 1.626 1.981 2.316 | 0.307 0.369 0.439 0.503 | 0.948 0.943 0.937 0.931 | 1.208 1.204 1.199 1.194 | 0.581 0.573 0.565 0.556 | 0.986 1.175 1.385 1.568 | 0.376 0.464 0.569 0.671 |
40×40×1.6 40×40×2.0 40×40×2.5 40×40×3.0 40×40×4.0 | 40 | 1.6 2.0 2.5 3.0 4.0 | 0.965 1.194 1.473 1.745 2.266 | 1.229 1.521 1.877 2.223 2.886 | 1.079 1.099 1.123 1.148 1.198 | 1.985 2.438 2.979 3.496 4.455 | 3.213 3.956 4.851 5.710 7.320 | 0.758 0.919 1.108 1.282 1.590 | 1.270 1.265 1.259 1.253 1.242 | 1.616 1.612 1.607 1.602 1.592 | 0.785 0.777 0.768 0.759 0.742 | 1.839 2.218 2.651 3.043 3.717 | 0.679 0.840 1.036 1.226 1.590 |
50×50×2.0 50×50×2.5 50×50×3.0 50×50×4.0 | 50 | 2.0 2.5 3.0 4.0 | 1.508 1.866 2.216 2.894 | 1.921 2.377 2.823 3.686 | 1.349 1.373 1.398 1.448 | 4.848 5.952 7.015 9.022 | 7.845 9.658 11.414 14.755 | 1.850 2.245 2.616 3.290 | 1.588 1.582 1.576 1.564 | 2.020 2.015 2.010 2.000 | 0.981 0.971 0.962 0.944 | 3.593 4.332 5.015 6.229 | 1.327 1.641 1.948 2.540 |
60×60×2.0 60×60×2.5 60×60×3.0 60×60×4.0 | 60 | 2.0 2.5 3.0 4.0 | 1.822 2.258 2.687 3.522 | 2.321 2.877 3.423 4.486 | 1.599 1.623 1.648 1.698 | 8.478 10.440 12.342 15.970 | 13.694 16.903 20.028 26.030 | 3.262 3.978 4.657 5.911 | 1.910 1.904 1.898 1.886 | 2.428 2.423 2.418 2.408 | 1.185 1.175 1.166 1.147 | 5.302 6.429 7.486 9.403 | 1.926 2.385 2.836 3.712 |
70×70×3.0 70×70×4.0 70×70×5.0 | 70 | 3.0 4.0 5.0 | 3.158 4.150 5.110 | 4.023 5.286 6.510 | 1.898 1.948 1.997 | 19.853 25.799 31.430 | 32.152 41.944 51.286 | 7.553 9.654 11.571 | 2.221 2.209 2.197 | 2.826 2.816 2.806 | 1.370 1.351 1.333 | 10.456 13.242 15.731 | 3.891 5.107 6.283 |
80×80×3.0 80×80×4.0 80×80×5.0 80×80×6.0 | 80 | 3.0 4.0 5.0 6.0 | 3.629 4.778 5.895 6.982 | 4.623 6.086 7.510 8.895 | 2.148 2.198 2.247 2.297 | 29.921 39.009 47.677 55.938 | 48.386 63.299 77.622 91.365 | 11.456 14.719 17.731 20.512 | 2.543 2.531 2.519 2.507 | 3.234 3.224 3.214 3.204 | 1.574 1.555 1.536 1.518 | 13.925 17.745 21.209 24.346 | 5.113 6.723 8.288 9.809 |
100×100×3.0 100×100×4.0 100×100×5.0 100×100×6.0 | 100 | 3.0 4.0 5.0 6.0 | 4.571 6.034 7.465 8.866 | 5.823 7.686 9.510 11.265 | 2.648 2.698 2.747 2.797 | 59.231 77.571 95.237 112.247 | 95.584 125.528 154.539 182.629 | 22.878 29.613 35.3 41.866 | 3.189 3.176 3.164 3.152 | 4.051 4.041 4.031 4.021 | 1.982 1.962 1.943 1.925 | 22.363 28.749 34.659 40.125 | 8.057 10.623 13.132 15.584 |
注:1.一般钢号为Q235-A,20或16Mn等,其力学性能与化学成分应分别符合GB700-88,GB699-88和GBl591-88的规定。
2.通常长度为4~9m。
3.生产冷弯型钢的主要工厂有:上海钢铁工艺技术研究所、南京轧钢厂、鞍山冷弯型钢厂、长春冷弯型钢厂、武钢汉口轧钢厂、宜昌冷弯型钢厂、广州异型钢材厂、首钢带钢厂、哈尔滨钢管厂等。
名称 | 最新价 | 涨跌 |
---|---|---|
螺纹钢 | 3680 | +20 |
低合金板卷 | 4160 | - |
中厚板 | 4080 | - |
焊管 | 4490 | +30 |
工字钢 | 4030 | +20 |
电镀锌板卷 | 5200 | - |
热轧卷板 | 11300 | - |
冷轧无取向硅钢 | 4880 | - |
圆钢 | 3940 | +20 |
钼铁 | 242500 | -2,000 |
低合金方坯 | 3600 | +10 |
铁精粉 | 770 | - |
准一级焦 | 1890 | - |
黄金 | 545 | -2 |
中废 | 2030 | 0 |
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