... GGG40/GGG50.Machined Part. Features to Pipe fitting,Hydrant Part,Ductile Iron Casting: 1.Material :GGG40/GGG50.2.Unit weight ... lathes,NC milling machines,boring machines,drilling machines and other common machines.8.Final inspection:NC inspecton ... engineering industry,electric power engineering industry,ship industry,Fire Hydrant industry and others.10.Representative product:gate valve body,butterfly ...