Subsurface sucker rod pumps are main equipment in sucker rod pumping system,which conduct the swabbing of oil well liquid by the power transmitted by the pumpingunit and sucker rods.The products conform to API Spec 11AXSpecification for Subsurface Sucker RodPump Assemblies,Components,and Fittings,GB/G18607 Petroleum and natural gasindustries—Drilling and productionequipment—Reciprocating full liner pump,and other related standards.The company produces different kinds of tubing pumps,rod pumps and special oilpumps like sand pumps,anti-sand pumps,anti-gas pumps,anti-salt pumps and so on.The pump barrel is made of the high qualityspecial-purpose pipe,with inside surface processedby surface hardening treatments such as chrome-plating,nickel phosphorus composite coating andcarbonitriding.That makes high intensity,goodrigidity,wear and corrosion resistances.The plunger surface is processed by spray metalcoating of nickel base alloy powder,or chromeplating,with good wear and corrosion resistances.The valve ball and seat are made of high-carbon chromium stainless steel,ceramic or tungsten carbide,with long service life.The pump efficiency is high and the pump detectionperiod is long.The structure is simple.The operation and installmentare convenient.