... ISO9001 4)OEM GG20/GG25 Sand Casting V Belt Cast Iron PulleySpecification:Materials: gray iron HT200 and ... →raw casting → sandblasting →rough machining or finish machining →surface treatment →product checking→ packing →deliveringCasting MaterialCast Iron, Grey Iron ... , deflection tester, Impact test machine, Projector, Altimeter, Scale Micrometer, pressure tester, etc.DeliverySample sent to customer by ...