high pressure , reasonable price, high efficient and have passed ISO9001:2008 This pump is mainly used for High-pressure water injection in oil field. 1.pressure:50 2.Stroke Length:127 3.flow rate:10 Main parameters-5SB-127-10/50This pump,based on its base type of 5ZBII-37/170 pump,has high successive coefficient. This pump has simple structure,woks reliably with easy operation and maintenance, ...