high-pressure pump is a new type of medium and low pressure large-flow pump developed by our company, with a maximum working pressure of 70MPa. The power end is matched to a variety of transmission speed ratios, and the maximum input power is 250kW. The hydraulic end uses the finite element analysis method to optimize the structure to ensure the stability and reliability of continuous work, and the integral pump head optimizes the structure of the pressure-bearing chamber. This pump type can meet the working pressure of 40-70MPa, flow rate 130-310L/min continuous operation conditions. Can be used for large-diameter pipeline cleaning, powder metallurgy, chemical industry reactor tank cleaning and descaling, large pipeline water injection, pressure test, this series of products can transport 0~50 °C water, emulsion and other chemical similar liquids.