Material: grey iron Production process: stamping Surface treatment:Zinc Plated Application:Equipments Sand casting ... or Furan Resin Sand and green sand2.Material:Grey iron,Ductile iron,Malleable Iron,Stainless steel,Carbon Steel,Aluminum, Brass ,Bronze or on ... machining:1.Process:die forging and free forging2.Material:gray iron,ductile iron,iron,carbon steel,white steel,steel,aluminum alloy,brass or ...