... )ISO9001 4)OEM GG20/GG25 Sand Casting V Belt Cast Iron PulleySpecification:Materials: gray iron HT200 and HT250Surface finish: polishing, anodizing, hard anodizing ... →deliveringCasting MaterialCast Iron, Grey Iron, Ductile Iron,Carbon Steel, Stainless steel, Alloy steel, Aluminum, Aluminum alloy etc.StandardISO, GB, ASTM, DIN, JISEquipmentmelting furnace, centrifugal ...