... to 1 inch (2.381mm to 25.4mm)Complying with: GB308-2002, ABMA Standard 10a-2001, USA FMBA 1989 ... good surface, hardened and tempered with perfect hardness;Chemical and military related applications, also with excellent surface finish, considerable hardness, ... bearing,conveyer belt,bicycle and automobile parts,slide bearing,caster wheels,computer peripheral products,toys,metal milling,hand tools and ...