QBQB310-2014-汽车结构用热连轧钢板及钢带
Q/BQB 310-2014代替 Q/BQB 310-2009BZJ 310-2012汽车结构用热连轧钢板及钢带Continuously hot-rolled steel sheet and stri
QBQB310-2014-汽车结构用热连轧钢板及钢带