MaterialStainless Steel,Website:http://www.hhcasting.com, Steel, Ductile Iron, Grey Iron, Aluminum, ... help you optimizing the whole solution for you from casting designing, casting processing to machining, heat treatment, surface treatment and so ... lower processing cost through improved machinability.Ductile Iron AdvantagesSince its development in the mid-1940s, ductile iron casting production has grown ...