热轧板卷2.75mm*1250*CQ235B本钢3640↑60热轧板卷3.0mm*1250*CQ235B本钢3580↑60热轧板卷5.75mm*1500*CQ235B本钢3550↑60热轧板卷7.5mm*1500*CQ235B本钢3550↑60热轧板卷5.75mm*1500*CQ235B北台3550↑60货少