This series of high flow pump has a helical gear, with the advantage of low noise, large flow, small pulse, stable operation.  It is widely used in the hydraulic systems of artificial, plywood ma-chinery, forestry machinery, plastic machinery, which is less than 2.5MPa hydraulic systems. It can be also used for high flow oil filling stations, oilfields. After corrosion treatment, it can be used for water pump.