... ,40Cr,Q345 2),standard:DIN ATSM AISI JIS 3),hot rolled Steel Billets Exporter1),Grade:3SP,Q235,20MnSi,16Mn,42CrMo,35CrMo,40Cr,Q3452 ... steel, etc. All these products are manufactured by Laiwu Steel Group.Mrs,LiTelephone:86-0634-6461612,13054836377Mobile Phone: 13963400909Fax: 86-0634-6461613 steel billets ...