岛国一区二区-岛国一区二区三区在线播放-岛国一区二区三区在线观看免费-岛国一区二区在线观看蜜桃-懂色av一区二区三区四区精-懂色一区二区三区在线播放

單位：Ｋg/m 　壁厚 外徑 3 3.5 4 4.5 5 5.5 6 32 2.146 2.460 2.762 3.052 3.329 3.594 3.847 38 2.589 2.978 3.354 3.718 4.069 4.408 4.735 42 2.885 3.323 3.749 4.162 4.562 4.951 5.327 45 3.107 3.582 4.044 4.495 4.932 5.358 5.771 50 3.477 4.014 4.538 5.049 5.549 6.036 6.511 54 3.773 4.359 4.932 5.493 6.042 6.578 7.103 57 3.995 4.618 5.228 5.826 6.412 6.985 7.546 60 4.217 4.877 5.524 6.159 6.782 7.392 7.990 63.5 4.476 5.179 5.869 6.548 7.214 7.867 8.508 68 4.809 5.567 6.313 7.047 7.768 8.477 9.174 70 4.957 5.740 6.511 7.269 8.015 8.749 9.470 73 5.179 5.999 6.807 7.602 8.385 9.156 9.914 76 5.401 6.258 7.103 7.935 8.755 9.563 10.358 89 6.363 7.380 8.385 9.378 10.358 11.326 12.281 108 7.768 9.020 10.259 11.486 12.701 13.903 15.093 133 11.178 12.725 14.261 15.783 17.294 18.792 159 13.422 15.290 17.146 18.989 20.821 22.639 219 18.601 21.209 23.805 26.388 28.959 31.517 273 23.262 26.536 29.797 33.046 36.283 39.508 325 27.750 31.665 35.568 39.458 43.337 47.202 355 38.897 43.158 47.406 51.641 377 41.339 45.871 50.390 54.897 426 46.777 51.913 57.036 62.147 450 　 480 　 530 　 630 　　　　　　　 單位：Ｋg/m 　壁厚 外徑 6.5 7 8 8.5 9 10 12 32 4.088 　 38 5.049 　 42 5.691 　 45 6.172 　 50 6.973 7.423 8.286 8.699 　 54 7.614 8.114 9.075 9.538 　 57 8.095 8.632 9.667 10.167 　 60 8.576 9.149 10.259 10.796 　 63.5 9.137 9.754 10.950 11.529 　 68 9.858 10.530 11.838 12.473 　 70 10.179 10.876 12.232 12.892 13.539 14.797 17.164 73 10.660 11.394 12.824 13.521 14.205 15.537 18.052 76 11.141 11.912 13.416 14.150 14.871 16.277 18.940 89 13.225 14.156 15.981 16.875 17.756 19.483 22.787 108 16.270 17.436 19.729 20.858 21.973 24.168 28.410 133 20.278 21.751 24.662 26.098 27.522 30.334 35.809 159 24.446 26.240 29.791 31.548 33.293 36.746 43.503 219 34.064 36.598 41.629 44.126 46.610 51.543 61.259 273 42.720 45.920 52.283 55.445 58.596 64.860 77.240 325 51.056 54.897 62.542 66.346 70.137 77.684 92.629 355 55.865 60.076 68.460 72.634 76.796 85.082 101.507 377 59.391 63.873 72.801 77.246 81.679 90.508 108.018 426 67.246 72.332 82.468 87.518 92.555 102.592 122.519 450 71.093 76.475 87.203 92.549 97.882 108.511 129.621 480 75.902 81.654 93.122 98.837 104.540 115.909 138.499 530 83.917 90.286 102.987 109.319 115.638 128.240 153.296 630 99.947 107.549 122.716 130.281 137.833 152.902 182.890注：計(jì)算常用型材理論重量計(jì)算公式：
　　m=F×L×ρ
　　m—質(zhì)量 Kg ；F—斷面積m2/m ；L—長度m ； ρ—密度 *Kg/m3
　　☆其中：F斷面積計(jì)算方法：
　　1、方鋼 F= a2
　　2、鋼管 F=3.1416×＄（D-＄） D—直徑 ＄—厚度
　　3、鋼板、扁鋼 F= a×＄ a—寬度
　　密度：
　　鋼材：7.85*103 kg/m3
　　鋁：2.5～2.95*103

　　銅：8.45～8.9*103
　　鑄鐵：6.6～7*103
　　尼龍：1.04～1.15*103