... treatment:sand blasted Heat treatment: Anneal Name :water pump impeller Material:stainless steel Surface treatment:sand blasted ... : AnnealBasic information as follows:1. Silicasol process water pump impeller and soluble glass precision casting2. Material: ... ect.4. Heat Treatment, polishing, plating, machining, ect.5. Application: Industrial parts, Machinery parts, hardware, construction parts, ...