... 4. assembly available Semi-opened type pump impeller is a important part for pump. It is used to transfer the flow through the pump. pump ... accessoryWe would like to provide you all kinds of pump parts as per your demand ... steel casting3. Certificate: DIN, AISI, ASTM, BS, JIS, ect.4. Heat Treatment, polishing, plating, machining, ect.5. Application: Industrial ...