A Brief Introduction:


1. API SPEC 10D Achieved
2. High restoring force Min. 620 lbf
3. Low starting force Max. 620 lbf
4. Made of Manganese steel with uniform hardness
5. Stop collars available.
6. Available in sizes 4-1/2" to 20"
7.  Easily disassembled or assembled at the rig site.



Advantages:

>>Integral casing centralizer is a simple, low-cost bow-spring design which can provide complete centralization in vertical or slightly deviated wells as the bow springs are slightly larger than the wellbore.

>>The non weld bow centralizers combine the highest restoring force with the lowest starting force.

>>High restoring force combined with low starting force is achieved with all bow heights.

>>The Bows of these Centralizers are heat treated in special furnace which gives it a peculiar 'bow spring' action.

>>The Heat Treated bows enables these centralizer to provide best centralization as well as help in faster running of casing.

>>The steel of these bows is a "special" made by combination or different metals to provide one of the best tensile strength as well as the "spring back" bow spring action.

>>The bows are available in a range to accommodate any well profile.

>>In this type of Centralizers the End Collars have hinges which makes it in two halves.

>>Their installation on the casing pipe is very convenient.It requires only the placement of the two assembled halves on the pipe and inserting the pin in the end collar hinge.

>>The centralizer when unassembled makes a compact package, reducing the shipping cost.



 Full line Service

Our products and services are closely related to oil drilling and oil well cementation. Our products include 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.


Packing and Shipping

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



Company Info

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 Casing Centralizers, pumping unit, tubing pump & sucker rod pump, 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.

API SPEC 10D Integral Centralizer