收藏词条 编辑词条 冷弯等边角钢 GB 6723-86
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):
所有钢种屈服点 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。
4.所有冷弯型钢的断面形状和规格尺寸可按用户需要提供。