In order to accurately grasp the changes in pressure and displacement pumps, mud pumps to be installed on the meter and pressure gauge, ready to make drilling staff to understand the functioning of the pump, but by pressure changes to determine whether the normal condition bore hole to prevent the occurrence of accidents . Early in 1588 there will be a record about 4 blade vane pump, one after another appeared in a variety of other rotary pump. 1689 NSQ60-30-15 sand pump suction, France D. Papin invented a 4 blade impeller centrifugal pump volute. 1818 suction sand pump, the United States emerged with a radial centrifugal pump straight blade, semi-open double-suction impeller and volute. 1840 and 1850, the United States of HR Worthington invented the pump cylinder and the steam cylinder opposed steam direct action piston pump, marking the formation of the modern piston pumps. 1851 ~ 1875, multistage centrifugal pump with guide vanes have been invented NSQ75-25-15 suction sand pump, so that the development of high-lift centrifugal pump as possible. Then NSQ150-15-15 suction sand pump, pumps after another. With the application of advanced technology, the efficiency of the pump gradually increase the scope and application performance are increasingly expanding. NSQ75-25-15 suction sand pump, Xiaochang County suction sand pump, mud pie provided by the Shijiazhuang-Pump Company. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) strong, credible, and other industries in other Shijiazhuang, Hebei accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shijiazhuang-faction pump into the brilliant and you work for a better future!