... :GB699-1999 4.Finish:zincing Auto water pump impellerThe the production processes of Auto water pump impeller1.IQC:check the DOB,the ... is without bubble or metal peel.)The feature of Auto water pump impeller1. Workpiece surface smooth, the transition smooth without cracks ... be galvanized and so on. Applied Range of Auto water pump impellerWidely used in Auto Industry,petrochemical industry,pharmacy,food ...