... and back machining function ),Grinding machines(including Internal, External and Centerless grinding machine),Wire cutting machines, and ... Materials: Stainless steel ,col-rolled steel ,spring steel ,aluminum alloy, brass, bronze, copper, plastic ,according to ... Shipment Terms/Lead time):TypePrecision CNC machining partMaterials:Aluminum alloyMaterial GradeGB,ASTM,AISI,DIN,BS,JISProcessPrecision CNC ...