... s drawing and requirementsCourse of productionModel making→Molding/Core→Mold assembling→Melting→Pouring→Opening→Finishing→Heat ... , carbon steel, low alloy steel, ductile iron, gray cast iron, aluminum alloy InspectionUltrasonic test, magnetic particle test ... , bale, package, barrel, etc.Casting OEM serviceMaterial: iron, gray iron, ductile iron, steel, stainless steel, carbon steel, alloyProcess: sand ...