10  September  2010

Established in 2000,  Xi'an Dongxin Petroleum Equipment Plant Co., Ltd is an integrated company en scientific research, design, production and services. It is a high-tech company which provides drilling equipments, tools and services.

Its plant is located on north of Lishan Mountain, Lintong Development Area.

It mainly produces gas and oil drilling tools and equipments. The main products includes various gas and oil wellhead, gas pipe safety guarding device, down hole safety guarding device in gas well, down hole choke holder of gas well, tri-functional automatic shut-off device of gas well, hydraulic dual OD driller stabilizer, high-pressure injection well head, various packers, blanking plug, ball injector valves, oil drainers, fishers and so on. In them, more than 10 products lead technological level in China, like gas well head device for replacing components under pressure, gas pipe safety guarding device, and driller tapered stabilizer, etc.

Adjustable polished rod packing box

Product Description:

General:

Our modified self-sealing polished rod packing box can adjust the packing's tightness with respect to the change of the flow tubing pressure, thus, improving the packing's lifetime and reducing the operating times of packings.

Characteristics:
 
— The cylinder type eccentric self-sealing polished rod packing box can adjust the side abrasion of the rod caused by inalignment of the horsehead.
— It can aslo adjust the side abrasion of the rod but its operation is much simple.
— With the self-sealing mechanism, the packing box will be automatically tightened during a dowmstroke, thus,improving the lifetime of the packings.
— We produce two types of self-sealing rod packing box:cylinder eccentric type and flange eccentric type.
— Polyurethane Yx sealing rings are used to make sure a reliable pack-off.