国标槽钢、工字钢、角钢、方管、空心型钢规格规格表.xls

名称：结构用冷弯方形空心型钢标准：GB/T6728-2002边长允许偏差/mm壁厚理论重量截面面积惯性矩惯性半径截面模数扭转常数厚度t/mm外圆弧半径/mmB/mmt/mmM/(kg/m)A/cm^2Ix=Iy/cm^4rx=ry/cmWx=Wy/cm^3It/cm^4Ct/cm^3碳素钢(σs≤320MPa)低合金钢(σs≥320MPa)FGDA—FGXT————————FGXR20±0.501.20.6790.8650.4980.7590.4980.8230.75t≤31.0～2.5t1.5～2.5t1.50.8261.0520.5830.7440.5830.9850.883＜t≤61.5～2.5t2.0～3.0t1.750.9411.1990.6420.7320.6421.1060.986＜t≤102.0～3.0t2.0～3.5t21.051.340.6920.720.6921.2151.06t＞102.0～3.5t2.5～4.0t25±0.501.20.8671.1051.0250.9630.821.6551.241.51.0611.3521.2160.9480.9731.9981.471.751.2151.5481.3570.9361.0862.2611.6521.3631.7361.4820.9231.1862.5021.8定尺精度级别长度范围/mm允许偏差/mm30±0.501.51.2961.6522.1951.1521.4633.5552.21普通级别4000～12000(+70,0)1.751.491.8982.471.141.6464.0482.49精确级别4000～6000(+5,0)21.6772.1362.7211.1281.8144.5112075精确级别＞6000～12000(+10,0)2.52.0322.5893.1541.1032.1025.3473.232.3613.0083.51.0782.3336.063.5840±0.501.51.7672.5255.4891.5612.7448.7284.131.752.0392.5986.2371.5493.11810.0094.6922.3052.9366.9391.5373.46911.2385.232.52.8173.5898.2131.5124.10613.5396.2133.3034.2089.321.4884.6615.6287.0744.1985.34711.0641.4385.53219.1528.4850±0.501.52.2382.85211.0651.9694.42617.3956.651.752.5893.29812.6411.9575.05620.0257.622.9333.73614.1461.9455.65822.5788.512.53.6024.58916.9411.9216.77627.43610.2234.2455.40819.4631.8977.78531.97211.7745.4546.97423.7251.8479.4940.04714.4360±0.6023.564.5425.122.358.3839.8112.62.54.3875.58930.342.32910.11348.53915.2235.1876.60835.132.30511.7156.89217.6546.718.54743.5392.25614.51372.18821.9758.12910.35650.4682.20716.82285.5625.6170±0.652.55.176.5949.42.7414.178.521.236.1297.80857.5222.71416.43492.18824.7447.96610.14772.1082.66520.602117.97531.1159.69912.35684.6022.61624.172141.18336.6580±0.702.55.957.7.58975.1473.14718.787118.5228.2237.0719.00887.8383.12221.959139.6633.0249.22211.747111.0313.07427.757179.80841.84511.26914.356131.4143.02532.853216.62849.6890±0.7538.01310.208127.2773.53128.283201.10842.51410.47813.347161.9073.48235.979260.08854.17512.83916.356192.9033.43442.867314.89664.71615.09719.232220.423.38548.982365.4