200x200h的精选

21.7Kg型号截面尺寸（mm）截面面积理论重量（高度*宽度）H*Bt1t2rcm2kg/m175*90175*90581023.2118.2200*100198*994.571323.5918.5200*100200*1005.581327.5721.7250*125248*124581332.8925.8250*125250*125691337.8729.7300*...