... steel, stainless steel, aluminum alloy,2.Standard: ASTM, AISI, BS, DIN, JIS, NF3.Process: investment casting, die casting, gravity casting, sand casting4.Machining: turning , milling ... , drilling, grinding, threading, CNC machining, etc.5.Finishing: sand blasting, polishing, plating, acid treatment, anodizing, painting and PVC metal casting part