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1、中華人民共和國冷拔圓鋼、方鋼、六角鋼GB/T905-94尺寸、外形、重量及允許偏差Dimension,shape,weightanatolerance代替GB905-82GB906-82forcold-drawnround,aquareandhexagonalsteelsGB907-82本標(biāo)準(zhǔn)中的尺寸允許偏差采用國際標(biāo)準(zhǔn)ISO286.1-1988《ISO極限與配合---第一部分：總論，公差、偏差與配合》中的數(shù)值，1主題內(nèi)容及適用范圍本標(biāo)準(zhǔn)規(guī)定了冷拔圓鋼、方鋼、六角鋼的尺寸、外形、重量及允許偏差。本標(biāo)準(zhǔn)適用于尺寸為3～80mm的圓鋼
2、、方鋼、六角鋼2鋼材的截面圖示及標(biāo)注符號2.1圓鋼的截面圖示及標(biāo)注符號如圖12.2方鋼的截面圖示及標(biāo)注符號如圖2國家技術(shù)監(jiān)督局1994-12-221995-10-01實施GB/T905-942.3六角鋼截面圖及標(biāo)注符號圖2。3尺寸、重量及允許偏差3.1鋼材的尺寸、截面面積及理論重量列于表13.2經(jīng)供需雙方協(xié)議，可以供應(yīng)中間尺寸的鋼材表1圓鋼方鋼六角鋼尺寸截面面積理論重量截面面積理論重量截面面積理論重量2kg/mmm2kg/mmm2kg/mmmmm3.07.0690.05559.0000.07067.7940.06123.28.04
3、20.063110.240.08048.8680.06963.59.6210.075512.250.096210.610.08334.012.570.098616.000.12613.860.1094.515.900.12520.250.15917.540.1385.019.630.15425.000.19621.650.1705.523.760.18730.250.23726.20.2066.028.270.22236.000.28331.180.2456.331.170.24539.690.31234.370.2707.038
4、.480.30249.000.38542.440.3337.544.180.34756.250.442--8.050.270.39564.000.50255.430.4358.556.750.44572.250.567--9.063.620.49981.000.63670.150.5519.570.880.55690.250.708--10.078.540.617100.000.78586.600.68010.586.590.680110.200.865--GB/T905-94續(xù)表1圓鋼方鋼六角鋼尺寸截面面積理論重量截面面積理論重
5、量截面面積理論重量2kg/mmm2kg/mmm2kg/mmmmm11.095.030.746121.00.950104.80.82311.5103.90.815132.21.04--12.0113.10.888114.01.13124.70.97913.0132.71.04169.01.33146.41.1514.0153.91.21196.01.54169.71.3315.0176.71.39225.01.77194.91.5316.0201.11.58256.02.01221.71.7417.0227.01.78289.02.
6、27250.31.9618.0254.52.00324.02.54280.62.2019.0283.52.23361.02.83312.62.5420.0314.22.47400.03.14346.42.7221.0346.42.72441.03.46381.93.0022.0380.12.98484.03.80419.23.2924.0452.43.55576.04.52498.83.9225.0490.93.85625.04.91541.34.2526.0530.94.17676.05.31585.44.6028.0615.8
7、4.83784.06.15679.05.3330.0706.95.55900.07.06779.46.1232.0804.26.3110248.04886.86.9634.0907.97.1311569.0710017.8635.0962.17.5512259.62--36.0----11228.8138.011348.90144411.312519.8240.012579.86160012.6138610.942.0138510.9176413.8152812.045.0159012.5202515.9175413.848.01
8、81014.2230418.1199515.750.0196815.4250019.6216517.052.0220617.3280922.0243319.155.0----262020.556.0246319.3313624.6--60.0282
