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日本SM490YB,SM520B钢板 日本结构用轧制钢材:SS300.SS400.SS490.SS540 焊接结构用钢: M400A,SM400B,SM400C,SM490A,SM490B,SM490C,SM490YA,SM490YB,SM520B,SM520C,SM570 建筑结构用轧制钢材:SN400A,SN400B,SN400C,SN490B,SN490C 汽车结构用抛热轧钢板及钢带:SAPH310,SAPH370,SAPH400,SAPH440 冷车结构用优良成型性的冷轧高强度钢板及钢带: SPFC340,SPFC370,SPFC390,SPFC440,SPFC490,SPFC540,SPFC590,SPFC490Y,SPFC540Y,SPFC590Y,SPFC780Y,SPFC980Y,SPFC340H. 汽车用热轧高强度钢板及钢带:SPFH490,SPFH540,SPFH590,SPFH540Y,SPFH590Y 高压气瓶用钢板及钢带:SG255,SG295,SG325,SG365 中常温压力容器用碳素钢板:SGV410,SGV450,SGV480