Company profile

Founded in 1997,Puyang Zhongshi Group as certified API casing centralizers manufacturer in China,specializes in design and manufacturing of bow spring centralizers,solid rigid centralizers and stop collars at competitive price.

For more than 15 years,Puyang Zhongshi Group always designes and manufactures top quality casing centralizers for primary cementing operations in the world.Each casing centralize is engineered to deliver high value and reliability according to our rich oilfild service experience.

The casing centralizer is tested against the American Petroleum Institute’s API Specification,event exceeding all industury standards. Our test equipment can withstand the high forces encountered when running casing and can provide the restorative forces needed for casing centralization.

Global Quality Certifications




Casing Centralizers Plant



Casing Centralizers Family