1. Design and concept: The first step in the process is to conceptualize the design of the hydraulic pump, based on the specifications required by the customer or the intended application.

2. Material selection: select the appropriate materials for the hydraulic pump. 

3. Machining and forming: machining, such as milling, turning, drilling, and boring. Forming may also be used to shape certain components.

4. Assembly: then assemble the components into the hydraulic pump. The pump is then tested to ensure that it functions correctly.

5. Finishing: applying a surface coating, such as paint or plating.

6. Packaging: Appropriate packaging materials are used to protect the pump during transport to its destination.

7. Quality control: Throughout the entire production process, quality control measures are in place to ensure that the hydraulic pump meets the required standards and specifications. Regular testing and inspections are performed to identify and correct any defects.