h-高度；b-腿宽；d-腰厚；t-平均腿厚；r-内圆弧半径；r1-腿端圆弧半径型 号hb尺 寸dt（mm）rr1截面面积(cm2)6.167.518.8910.9013.3015.6017.0018.1019.5020.7022.2023.425.226.728.830.632.935.240.546.553.461.5理论重量(kg/m)550324.47.06.02.54.846.565364.47.26.02.55.90880404.57.46.52.57.0510100464.57.67.03.08.5912120524.87.87.53.010.414140584.98.18.03.012.314a140624.98.78.03.013.316160645.08.48.53.514.216a160685.09.08.53.515.318180705.18.79.03.516.318a180745.19.39.03.517.420200765.29.09.54.018.420a200805.29.79.54.019.822220825.49.510.04.021.022a220875.410.210.04.022.624240905.610.010.54.024.024a240955.610.710.54.025.827270956.010.5114.527.7303001006.511.012531.8333301057.011.713536.5363601107.512.614641.9404001158.013.515648.3注 （1）轻型槽钢的通常长度：5~8号长5~12m；10~18号长5~19m；20~40号长6~19m。 （2）制造钢号：A3，A3F，B3F等。
（3）标记举例：普通碳素钢甲类平炉3号沸腾钢180mmX70mmX5.1mm的热轧轻型槽钢的标记为： 热轧轻型槽钢
180mm*70mm*5.1mm-YB164-63
A3F-YB170-63
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