... automatic stamping machine,punching machines,Oil Hydraulic pressing machines,bending machines,welding machines, meter lathes3.Material:Carbon steel(cold rolled steel sheet,galvanized steel ... deep stamping, bending, punching, threading,welding, tapping, rivetingMaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc etc.FinishPolishing; Anodize; SandingPowder coating; Vacuum Plating ...