forged steel ring 16Mn / S355JR 1.Authentification:ISO9001;2008 2.Packing:In bundle 3.Port:XINGANG forged steel ring 16Mn / S355JR ItemRound steel barGradeQ235,Q215,45#,35CrMo,42CrMo,20CrMo,Q235B,20#,25#,35#,45#,20Cr,40Cr,42CrMo,35Crmo,20CrMo,16Mn,Q345BStandardGB13013-91,GB699-1988,GB700-1988,GB3077-1988,GB702-1986Applications rangeChemical fertilizer pipe,building,machinery,textile industury, ...