• Model NO.：SC412
• Tensile Strength of Body：103,000
• Blades：Fully Welded
• Yield Strength of Blade：36,000 Psi
• Tensile Strength of Blade：58,000 Psi
• Transport Package：Standard Export Packaging, Wooden Case
• Specification：API
• Trademark：PYZS
• Origin：China
• HS Code：73079900
• Production Capacity：50000 Set Per Month

Diameter (INCH)Height(MM)31/2×51/220041/2×51/220051/2×81/210051/2×81/220061/2×81/21207×81/21007×81/22007×81/320051/2×81/22007×95/81007×95/820095/8×121/410095/8×121/4200133/8×16240133/8×171/22405*624041/2×51/220041/2×61/21507×81/220071/2×95/820051/2×81/220065/8×81/220095/8×133/8240Rigid casing centralizer

Rigid casing centralizer

Rigid casing centralizer-our API Certificate


2. Our Services
Our products are closely related to oil drilling and oil well cementation, including rigid casing centralizer, integral casing centralizer, welded casing centralizer, bow spring centralizer, float shoe, float collar, Suck Rod Pump, api pumping unit, Thread Protector, Thread Gauge, Api Valve Ball and Valve Seat, coupling and pump plungers.

3. Packing and Shipping

Wooden case, standard export packaging, firm enough for long distance sea-shipped, air transportation and even railway transportation.


4. Company Information

The predecessor of Puyang Zhongshi Group Co. Ltd, was the 5th Machine Repairing Factory of Puyang Zhongyuan Oil field, Sinopec Corp. In 1997, after being restructured according to the modern corporate system, the factory was named Puyang Zhongshi Group Co., Ltd.

With registered capital of USD 10.15 million, Puyang Zhongshi Group is composed of 9 subsidiaries, including 8 manufacturers and 1 trade company. Zhongshi Group covers an area of 200, 000 sq. M, including workshop area of 50, 000 sq. M. Various kinds of production equipment values USD 6.5 Million. It has a strong mechanical processing capability.

Our leading products are rigid casing centralizer, pumping unit, tubing pump & sucker rod pump, Integral Flexible Centralizer, Rigid Centralizer, Drillalbe Non-Rotating Cementing Plugs/Conventional Cement Plug, Float Collar & Float Shoe and other cementing accessories, down-hole tools, wellhead (X-mas tree), drilling solid control series, pressure vessel, camping house, air cannon, belt feeder and so on. They are mainly supplied to Central Asia, Southeast Asia, Africa and Middle East and many other countries.

Zhongshi Group has been the Tier One internet service provider of Sinopec. We passed ISO9001 quality management system certification and got approved to use API monograms on its oil machineries. So far, we have attained API 5CT, API 10D, API 11AX, API 11E and more are applying.

We would like to faithfully cooperate with friends from all circles with classic products and service to achieve common development.