API-certified Casing Centralizer Stop collars

1.Application and characteristic of stop collar:

Position device (stop ring or stop collar), called position ring, stop circular, brake ring, etc.

It is used to limit the centralizer or cement basket slip on casing. It is divided into mobile

screw type, fixed screw type and buckle type.

2. Install and use the method of stop collar:

a. When use mobile screw-type stop collar, slip over the casing, and tighten the screws using wrench.

b. When use fixed screw stop collar, put the collar around the casing, insert the screw, and

knock into screws by hammer.

c. when install buckle type stop collar, buckle the stop collar onto the casing, lock with pin,

knock into the screws.

3. Property Parameters of stop collar:

Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars.

We have competitive price of our main products like: subsurface sucker rod pump, pumping unit, cementing tools, wellhead (Christmas Tree), etc, with certificates of API11AX,API11E,API6A,API5CT,ISO14001 and ISO9001 approved. We have 9 factories, 580 employees, including more than 160 technicians and engineers.

With 20 years manufacturing experience and more than 10 years exporting experience, our main clients include all oilfields in China such as: Zhongyuan, Daqing, Shengli, Changqing, Nanyang, Karamay, etc and we have exported to more than 30 countries abroad such as: Indonesia, Thailand, Myanmar, Russia, Kazakhstan, Venezuela, Peru, Columbia, Canada, America, Sudan, Egypt, Iran, Australia etc.

We would like to cooperate with friends from all over the world with high quality products and service to achieve mutual development .