About our company

  Puyang Zhongshi Group Co., Ltd. was founded in 1996, which is the restructured enterprise of Central Plains oilfield branch company of SINOPEC . The company registered capital is 60.83 million yuan, with annual output value 200 million yuan, 580 employees, including more than 160 technical and administrative staff . Oil machinery is our main products, the leading products include pumping unit, subsurface sucker rod pump, wellhead (Christmas Tree), pressure vessels, drilling solid control series products and cementing accessories.

  Features of sucker rod pump

The workover process of tubing pump is: firstly the barrel being connected to the tubing is directly run into the well at desired depth and then the plunger is run into the barrel with the sucker rod.

The applicable tubing pump is larger in size than rod pump in the same tubing.

Tubing pump has simple structure so the displacement is bigger and it is suitable for the shallower well with shallow depth and high production.

Comparing with conventional tubing pump, ours has better performance in corrosion resistance antifriction aspect. 

Plunger of it is nickel plated on alloy base, inside wall of barrel is plated with hard cadmium, key parts, such as valve hood, valve ball, are made of materials with excellent mechanical performance and corrosion resistant property.

Compared with conventional pump, the series of tubing pump has a longer working life.

Our professional factory

Looking forward to cooperating with you.  ^_^