MBN11250 LAC 340Y410T GI50/50 宝钢镀锌材料 ¥4.50 MBN11250 LAC 380Y450T GI50/50 宝钢镀锌钢材 ¥4.50 MBN11250 LAC 420Y480T GI50/50 宝钢镀锌钢材 ¥4.50 MBN11250 IFC 180Y340T GI50/50 宝钢镀锌钢材 ¥4.50 MBN11250 IFC 210Y350T GI50/50 宝钢镀锌钢材 ¥4.50 MBN11250 IFC 240Y360T GI50/50 宝钢镀锌钢材 ¥4.50