High pressure reciprocating pumps are mainly suitable for use as process pumps in the petroleum, chemical, and fertilizer industries, as well as water injection pumps in oil fields and salt mines. Steel pipes and pressure vessels are used as pressure testing pumps and booster pumps. They are also used for high-pressure cleaning and descaling in industries such as construction, shipbuilding, and chemical engineering. They are also used as transmission sources for boiler water supply and hydraulic machinery.