Blanking copper nuts 1 aluminum alloy 2 CT7/Ra0.8- R3.2 3 blanking ... copper nuts Specifications: Application:machinery parts Material:aluminum alloy Dimension:as per customer's drawings Casting Level:CT7 Surface Roughness:Ra0.8 ... Grey Iron, Ductile Iron,Carbon Steel, Stainless steel, Alloy steel, Aluminum, Aluminum alloy etc.StandardISO, GB, ASTM, DIN, JISEquipmentmelting furnace, centrifugal casting ...