GBT905-1994冷拉国钢、方钢、六角钢尺寸、外形、重量及允许偏差.doc

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1、冷拉国钢、方钢、六角钢（GB/T905-1994）创建时间：2008-08-02 4.冷拉圆钢、方钢、六角钢（GB/T905-1994）(1)尺寸规格见表4-5。表4-5冷拉圆钢、方钢、六角钢的尺寸规格尺寸/mm圆钢方钢六角钢截面面积/mm2理论质量/(kg/m)截面面积/mm?理论质量/(kg/m)截面面积/mm?理论质量/(kg/m)3.07.0690.05559.000O.07067.794O.06123.28.042O.0631　10.240.08048.868O.06963.59.621O.075512.

2、25O.096210.61　O.08334.O12.570.098616.000.12613.860.1094.515.90O.12520.25O.15917.54O.1385.019.830.15425.00O.19621.65O.1705.523.76O.18730.250.23726.200.2066.O28.27O.22236.000.28331.180.2456.331.17O.24539.69O.31234.37O.2707.O38.48O.30249.00O.38542.44O.3337.544.18

3、O.34756.25O.442  8.050.270.39564.000.50255.43O.4358.556.750.44572.250.567  9.O63.62O.49981.00O.63670.150.551　9.570.88O.55690.25O.708  10.078.540.617100.O0.78586.60O.68010.586.59O.680110.2O.865  11.095.03O.746121.0O.950104.80.82311.5103.90.815132.21.04  12.0113

4、.1O.888144.O1.13124.7O.97913.O132.71.04169.01.33146.41.1514.O153.91.21196.O1.54169.71.3315.O176.71.39225.O1.77194.91.5316.O201.11.58256.02.01221.71.7417.0227.01.78289.02.27250.31.9618.0254.52.00324.02.54280.62.2019.0283.52.23361.O2.83312.62.4520.0314.22.47400.

5、O3.14346.42.7221.O346.42.72441.O3.46381.93.0022.O380.12.98484.03.80419.23.2924.0452.43.55576.O4.52498.83.9225.O490.93.85625.O4.91541.34.2526.O530.94.17676.O5.31585.44.6028.O615.84.83784.O6.15679.O5.3330.O706.95.55900.O7.06779.46.1232.0804.26.31　102.48.04886-86

6、.9634.O907.97.1311569.0710017.8635.O962.17.5512259.62 136.O    11228.8138.O11348.90144411.31251　9.8240.012579.86160012.6138610.942.0138510.9176413.8152812.O145.O159012.5202515.9175413.848.O181014.2230418.11991515.750.0196815.4250019.6216517.O52.O220617.3280922

7、.0243319.155.O    262020.556.0246319.3313624.6  60.O282722.2360028.3311824.563.O311724.5396931.2  65.0    365428.767.0352627.7448935.2  70.O384830.2490038.5424433.175.0441834.7562544.2487138.280.O502739.5640050.2554343.5注：1.表内尺寸一栏，对圆钢表示直径，对方钢表示边长，对六角钢表示对边距离。以下

8、各表相同。　　2.表中理论质量按密度为7.85g/cm3计算。对高合金钢计算理沦质量时应采用相应牌号的密度。(2)允许偏差见表4-6、表4-7。表4-6冷拉圆钢、方钢、六角钢的尺寸允许偏差   (mm)尺寸允许偏差级别8h89h910h1O11h1112h1213h13允许偏差30-0.0140-0.025O-O.0400-O.0600-0.15O-O.14