copper valve cover casting 1.materials:ASTM B148-92 C95500,ASTM B763-90 ... , Solidwork, CAXA UG, CAD/CAM/CAEPrecision machiningCNC, milling machine,drilling machine,all types of lathe Surface finish processsand blasting,heat treatment ... ,heat treatment,Mechanical properties testServiceOEM service availableProductall kinds of casting(unit weight ≥5kg)AdvantageGood quality and strict delivery time