3-2-2 型鋼

熱軋普通工字鋼(GB706—88)表3-9續(xù)上表型號尺寸(mm)截面面積(cm2)理論質(zhì)量(kg/m)hbdtrr140b40c45a45b45c50a50b50c56a56b56c63a63b63c40040045045045050050050056056056063063063014414615015215415816016216616817017617818012.514.511.513.515.512.014.016.012.514.516.513.015.017.016.516.518.01 ......（本文共 4356 字 , 3 張圖）     [閱讀本文] >>