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1、热轧工字钢热轧工字钢(GB/T706-1988)(GB/T706-1988)(1)尺寸规格，见表 1 表表 1 1 热轧工字钢的尺寸规格热轧工字钢的尺寸规格参考数值 尺 寸/mmXXY-Y型号hbDtrr1截面面积/em2理论质量/(kg/m)1x/cm4Wx/cm3ix/cmIx:SxIy/cm4Wy/cm3iy/cm 1O100684.57.66.53.414.34511.261245494.148.5933.O9.721.52 12.6126745.08.47.O3.518.11814.22348877.55.2010.846.912.71.61 14140805.59.17.53.82
2、1.51616.8907121025.7612.O64.416.11.73 16160886.O9.98.04.026.13120.51311301416.5813.893.121.21.89 18180946.510.78.54.330.75624.14316601857.3615.412226.O2.00 20a2001007.011.49.04.535.57827.92923702378.1517.215831.52.12 20b2001029.O11.49.04.539.57831.06925002507.9616.916933.12.06 22a2201107.512.39.54.8
3、42.12833.07034003098.9918.922540.92.31 22b2201129.512.39.54.846.52836.52435703258.7818.723942.72.27 25a2501168.O13.O10.05.O48.54138.10550204021O.221.628048.32.40 25b25011810.O13.010.O5.053.54142.03052804239.9421.330952.42.40 28a2801228.513.710.55.355.40443.492711050811.324.634556.62.50 28b28012410.5
4、13.71O.55.361.00447.888748053411.124.237961.22.49 32a3201309.515.011.55.867.15652.7171110069212.827.546070.82.62 32b32013211.515.O11.55.873.55657.7411160072612.627.150276.O2.61 32c32013413.515.O11.55.879.95662.7651220076012.326.854481.22.61 参考数值 尺 寸/mmXXY-Y型号hbdtrr1截面面积/em2理论质量/(kg/m)1x/cm4Wx/cm3ix/
5、cmIx:SxIy/cm4Wy/cm3iy/cm 36a36013610.O15.812.O6.076.48060.0371580087514.430.755281.22.69 36b36013812.015.812.O6.083.68065.6891650091914.130.358284.32.64 36c36014014.015.812.06.O90.88071.3411730096213.829.961287.42.60 40a40014210.516.512.56.386.11267.59821700109015.934.166093.22.77 40b40014412.516.51
6、2.56.394.11273.87822800114015.633.669296.22.71 40c40014614.516.512.56.3102.11280.15823900119015.233.272799.62.65 45a45015011.518.013.56.8102.44680.42022200143017.738.68551142.89 45b45015213.518.013.56_8111.44687.48533800150017.438.O8941182.84 45c45015415.518.O13.56.8120.44694.55035300157017.137.6938
7、1222.79 50a50015812.020.014.07.O119,30493.65446500186019.742.811201423.07 50b50016014.O20.014.07.O129.304101.50448600194019.442.411701463.01 50c50016216.O20.O14.07.0139.304109.35450600208019.O41.812201512.96 56a56016612.521.014.57.3135.435106.31665600234022.047.713701653.18 56b56016814.521.O14.57.31
8、46.635115.10868500245021.647.214901743.16 56c56017016.521.O14.57.3157.835123.90071400255021.346.715601833.16 63a63017613.O22.O15.O7.5154.658121.40793900298024.554.217001933.31 63b63017815.022.O15.O7.5167.258131.29898100316024.253.518102043.29 63c63018017.022.015.O7.5179.858141.189102000330023.852.91
9、9202143.27 12120745.08.47.O3.517.81813.98743672.74.9510.346.912.71.62 24a2401168.O13.01O.O5.047.74137.47745703819.7720.728048.42.42 24b2401181O.O13.010.05.O52.54141.24548004009.5720.429750.42.38 27a2701228.513.710.55.354.55442.825655048510.923.834556.62.51 27b27012410.513.71O.55.359.95447.0646870509
10、10.722.936658.92.47 30a3001269.O14.411.O5.561.25448.084895059712.125.740063.52.55 30b30012811.014.411.05.567.25452.794940062711.825.442265.92.50 30c30013013.014.411.O5.573.25457.504985065711.625.O44568.52.46 55a55016812.521.O14.57.3134.185105.33562900229021.646.913701643.19 55b55016814.521.O14.57.31
11、45.185113.97065600239021.246.414201703.14 55c55017016.521.O14.57.3156.185122.60568400249020.945.814801753.08 所列工字钢是经供需双方协议，可以供应的型号。(2)允许偏差见表 2表表 2 2 热轧工字钢的允许偏差热轧工字钢的允许偏差(mm)(mm)型号8、1O、12、12.6、1416、1820、22、24、25、27、28、3032、364045、50、55、56、63高度 h士 2.O3.O4.0腿宽 b士 2.02.53.03.54.O腰厚 d0.5士0.50.7士 O.8土 0.9弯腰挠度不应超过 O.15d通常长度5-19m6-19m
