The HL-K3V112DT dual axial variable displacement plunger pump can be combined with hydraulic components such as various motors and valves to form a hydraulic transmission system. The pump is featured with high efficiency, high self-sucking capacity, long service life, low noise, multiple control modes, reliable operation, etc. It is mainly used in hydraulic excavators of 20-22 tons. It has also been adopted in industries such as petroleum, mining, engineering machinery, plastics,shipbuilding, aviation, metallurgy, and forging.