热轧板卷2.75mm*1250*CQ235B本钢4120↓40热轧板卷3.0mm*1250*CQ235B本钢4060↓40热轧板卷5.75mm*1500*CQ235B本钢4030↓40热轧板卷7.5mm*1500*CQ235B本钢4030↓40热轧板卷5.75mm*1500*CQ235B北台4030↓40货少