• Model NO.：ZS7812
• Item：Onepiece Centralizer
• Use：Horizontal Oil Well and Straight Wells
• Size：7" for Use in 8 1,2" Open Hole
• Color：Red, Black, Orange or Others
• Accessory：Stop Ring
• Usage：Well Cementation
• Transport Package：Pallet Packing or as Required
• Trademark：PYZS
• Origin：China
• HS Code：73079200
• Production Capacity：10000PCS Per Month

Basic Info.

Model NO. ZS7812 Item Onepiece Centralizer Use Horizontal Oil Well and Straight Wells Size 7" for Use in 8 1/2" Open Hole Color Red, Black, Orange or Others Accessory Stop Ring Usage Well Cementation Transport Package Pallet Packing or as Required Trademark PYZS Origin China HS Code 73079200 Production Capacity 10000PCS Per Month

Product Description

1. Product Description
Slip on Onepiece Standard Bow Spring Centralizer, bows are made of manganese steel which has been heat teated and hardened tempered to ensure proper and consistent spring characteristics. Oil well drilling and well completion, it's longevity and safe operation depends greatly on a good, complete cementing. Deviated or fully horizontal casings rely on a proper standoff for a complete cementing which comes from using onepiece spring centralizers. Zero defects, which is the best solution during hole cementation.

We also make Rigid Steel Centralizers, Composite nylon centralizers, roller centralizer and Turbolizers for your casing in stock 4", 4 1/2", 5", 5 1/2", 6 5/8", 7", 7 5/8", 9 5/8", 13 3/8", 16", 18 5/8", 20" and 26" inside diameters with your specified outside diameters & configuration in both sliding and fixed configurations.

2. Function:
a) To ensure casing pipe centered on the hole all the way.
b) To achieve a proper standoff for a complete cementing.c) Balance liquid pressure in annular space by reducing adhesion phenomenon.d) Improving replacing ratio of mud and boosting cementing quality by reducing channeling effect.

3. Our Services.
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.

4. Packaging & Shipping
Pallet packing, standard export packaging or as required, firm enough for long distance sea-shipped, air transportation and even railway transportation.

5. 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 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.

Slip on Onepiece Standard Bow Spring Centralizer

Model No.	Internal Diameter	thickness(mm)	Overall Length	Max O.D.	Spring Piece
4 1/2" * 6"	4.62"	3.8	15"	6"	5
5.5"* 8.5"	5.62"	3.8	15"	8.5"	5
7" * 8.5"	7.12"	4.0	15"	8.5"	6
7" * 8.75"	7.12"	4.0	15"	8.75"	6
9 5/8" * 12 1/4"	9.745"	4.0	17.5"	12 1/4"	6
13 3/8" * 17 1/2"	13.575	4.0	17.5"	17 1/2"	6

Slip on Onepiece Standard Bow Spring Centralizer