... 7075,5052,6082-T6,6082 etc.2. Process: die casting and precision machining3. FOB Ningbo: 8.9-19. ... Specification: Material Aluminium, Brass, Copper, Iron, Stainless Steel, Casting Steel etc .Surface TreatmentPolishing, Powder coating, Spraying, Anodising, Zinc ... . Products covering hydraulic cylinders, pistons, flanges, valves parts, casting and forging parts, engineering goods, etc.5. Quality control ...