热轧板卷2.75mm*1250*CQ235B本钢4130↓50热轧板卷3.0mm*1250*CQ235B本钢4070↓50热轧板卷5.75mm*1500*CQ235B本钢4040↓50热轧板卷7.5mm*1500*CQ235B本钢4040↓50热轧板卷5.75mm*1500*CQ235B北台4040↓50货少