... Ductile/Grey iron,Casting 2.Size:DN20-800MM 3.Different colors adopted 4.MOQ:negotiation 5.OEM/ODM cast iron elbows MaterialDuctile Cast Iron ... Galvanization Casting part for Elbow Materialductile iron/grey iron/malleable iron/aluminum/copperSurface treatmentshot-blast/deburr/anti- ... forging, master mold, machine forging, forgings, casting iron, stainless steel, forging product, pigeon forge, die ...