... Quality Control OEM Gray Iron Pump Component1. Material: The OEM pump components are made of gray iron ... machine, drilling etc. Surface treatment: painting, polishing, heat treatment, plating or galvanization etc.6. Size and Design ... West Europe, Mid-East. Production NameOEM Gray Iron Pump ComponentMaterialGray IronProduction Technology Sand CastingSurface TreatmentSand BlastingStandardDIN, ASTM, ...