1.custom casting 2.stainless steel casting 3.Oil drilling equipment casting 1 , Material : steel, alloy, carton2, Technology : precision casting, evanescent mode casting, investment casting3, Weight: 0.5KG-1Ton4, Surface treatment: Coating, painting5, Free of burrs, sand hole and other defect6, We provide OEM sevice and produce the parts following clients'drawings7, moderate price compared with ...