sand casting Material iron, steel Weight range from 0.5 to 8000kg Process sand casting,investment casting,machining Sand casting1.Material: gray iron, ductile iron, steel, bronze2.Weight range from 0.5kg to 8000kg3.Process: sand casting,investment casting,machining4.Valve parts and components: valve body, disc, safety valve spring follower, gear housing, manual housing, worm gear...5.Pump parts ...