... OEM cnc cast iron valve body Specifications cast iron valve body 1.Material:ductile iron,grey iron 2.Full set ... are welcomeAvailable material and process1.Available material: cast iron,steel,stainless steel,brass,copper,aluminum,zinc etc2. ... 1materialgrey cast iron, ductile cast iron, steel, stainless steel, brass, copper, bronze, aluminum, zinc etc2sandgreen sand, sodium silicate sand etc3mahinelathe ...