3.2 型材

表2-27热轧等边角钢(摘自GB9787—88neqГOCT8509—72)续表2-27角钢号数尺寸mm截面面积cm2理论质量kg/m外表面积m2/m参考数值Z0cmX—XX0—X0Y0-Y0X1—X1bdrIXcm4iXcmWXcm3IX0cm4iX0cmWX0cm3IY0cm4iY0cmWY0cm3IX1cm45.656345863.3434.3905.4158.3672.6243.4464.2516.5680.2210.2200.2200 ......（本文共 10227 字 , 6 张图）     [阅读本文] >>