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　　 API standard oil pump is general international oil field pump type, mainly divided into two major categories:tubing pump and rod pump.
In the inspection and maintenance pump, it can directly pull out of the pump or valve to ground, without moving the tubing string.

　　 the whole barrel pumps are commonly used in oilfield, but it is not suitable for oil well which have sand, gas, heavy oil, deposits, sand so on . Our company produces the sand control pump, the gas control pump, the heavy oil pump,and the sand pump can resolve the above problems well.

　　 PUYANG ZHONGSHI GROUP provides oilfield pump accessories, pump barrel, plunger, valve cage, coupling,valve ball and seat, etc., also undertaking map processing business or OEM.

　　 We can give you one-stop procurement services for coalbed methane, shale gas equipment ;and we can according to customer's actual situation to provide the best solution.