... spraying,etc OEM cnc cast iron valve body Specifications cast iron valve body 1.Material:ductile iron,grey iron ... ,copper,aluminum,zinc etc2.Casting(sand casting,investment casting,lost wax casting,die casting etc),forging,machining3.Full ... machine, planting machine, machining center4processsand casting, investment casting, lost wax casting, die casting, forging, stamping, machining etc5min tolerance0 ...