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In modern industry, impellers are playing an important role as key components for power transmission and fluid delivery. The performance of impeller castings for water pumps, fans, and compressors directly determines the operating efficiency and service life of the entire equipment.

The pump casing is usually a closed metal shell that is used to contain the rotating parts and other important structures of the pump. During the operation of the pump, it plays a role of protection and support to ensure the normal operation of the pump.