The metallurgical industry involves production processes with high temperature, high pressure, and complex technologies, and the pressure calibration pump has an indispensable position in it. During the steel smelting process, the pressure monitoring and control inside equipment such as blast furnaces and converter furnaces are of crucial importance. The pressure calibration pump can calibrate the pressure measuring devices of these equipment, ensuring accurate understanding of the pressure changes inside the furnace, so that the smelting process parameters such as blast volume and fuel supply can be adjusted in a timely manner, guaranteeing the quality and output of steel products. In the gas transmission system of a metallurgical plant, such as the pipelines for transporting gases such as oxygen and nitrogen, the pressure calibration pump is used to calibrate the pressure instruments on the pipelines, ensuring the stable transmission of gases at the specified pressure, meeting the pressure requirements of different production links, and preventing production accidents caused by pressure fluctuations. At the same time, in the hydraulic transmission system of metallurgical equipment, such as the hydraulic screw-down device of a rolling mill, the pressure calibration pump can calibrate its pressure control system, precisely controlling the pressure of the rolls, making the thickness of the steel rolled evenly, improving the accuracy and yield of the products, and promoting the efficient and safe production of the metallurgical industry.