... lathe 4)Certifications: ISO9001 Forged Flange 1.material:aluminum, copper and steel (15#,20#,25#,30#.35#,40#,45#,46#,etc ... machining Electronic cold forging metal parts Headed rivet, plug bolt and pins Cold forged Carbon Steel Flange Shafts & special-headed parts ... Motorcycle cold forging parts Aluminum rivet and screw Engineering components Bolt and axle Thread-lock