MBN11251-CR420LA拉伸试验表面质量级别 ¥5020.00 MBN11251-IFC240Y360T-GI70/70-U产品标准表面质量级别 ¥5020.00 MBN11251-LAC210Y310T-GI70/70-U交货状态检验项目 ¥5020.00 MBN11250-LAC340Y410T-UC-U折弯工艺双相钢供应 ¥5020.00 MBN11250-CR440Y780T-DP-GI70/70-U外板冲压支持检测 ¥5020.00 MBN11251-IFC180Y330T-UC-U低合金冲压汽车大梁 ¥5020.00