DH420钢板简介DH420船舶及海洋工程用结构钢，属于低合金高强度钢，用于船舶及海洋工程，油气开采及储运等，DH420钢板现货库存，超宽超厚船板，CCS DH420、ABS DH420、BV DH420、DNV DH420、GL DH420、KR DH420、LR DH420、NK DH420、RINA DH420、RS DH420；舞钢期货订轧，…