A.剪裁、锻烧、铸造B.锻烧、铸造、滚轧C.冲压、锻烧、铸造、剪裁D.剪裁、冷弯、滚轧、冲压
A.245~255g/cm2B.8.45~8.55/cm2C.24.5~25.5/cm2D.2.45~2.55/cm2