Gold Member Since 2010
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Puyang Zhongshi Group Co., Ltd.

Casing Centralizer, Rigid Centralizer, Roller Rigid Centralizer manufacturer / supplier in China, offering Chinese Manufacturer Straight Vane Casing Roller Centralizers, Slip on Single Piece Bow Spring Casing Centralizer, Spiral Blades Configurations Thermoplastic Centralizer and so on.

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Supplier Homepage Product Oil well down-hole tools Chinese Manufacturer Straight Vane Casing Roller Centralizers

Chinese Manufacturer Straight Vane Casing Roller Centralizers

FOB Price: US $10-50 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $10-50/ Piece
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Port: Qingdao, China
Production Capacity: 10000PCS/Month
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: API
  • Surface Treatment: Spray-Paint
  • Structure: Roller
  • Type: Centralizer
  • Size: 4 1/2"-20"
  • Delivery: Promptly
  • Transport Package: Wooden Case
  • Origin: China
  • Certification: ISO 9001:2000, ISO 9001:2008
  • Centralizer Type: Rigid
  • Material: Cast Steel
  • Product Name: Roller Centralizer
  • Sample: Provide
  • Trademark: zhongshi
  • Specification: API Standard
  • HS Code: 0
Product Description
Chinese manufacturer Straight Vane Casing Roller Centralizers

Roller centralizers are mainly used for big high Roller, high  deviated wells and horizontal wells, to centre casings.Roller Centralizers can also remove wellbore cake and  improve mud replacement efficiency etc.Roller Centralizers provide superior wear  resistance and have been proven to remain functional throughout the life  of the well and can aid in casing/tubing retrieval. 

Precision-machined  inside diameter fits over the casing through the complete API tolerance  range, providing excellent rotational performance in mud. 

When running  casing through open hole, the system's smaller roller-contact area  reduces the risk of differential sticking and maintains standoff .The roller/axle relationship ensures that axle shear  stresses remain within elastic limits, preventing permanent deformation.  
Axles are crimped in place, eliminating the welding process, while  ensuring the rollers cannot break free and fall into the wellbore. The  system's high-quality construction materials improve  high-pressure/high-temperature capabilities.
Roller Centralizers are available in sizes 4½" to 20".Any special sizes are available on request.

Hooping In-Dia. (mm)Hooping thickness(mmTotal length
Amount of spring(mm)
5-1/2" x 8-1/2"142-1483-5650±50225±55
7" x 9-5/8"181-1863-5650±50255±56
7" x 8-1/2"181-1863-5650±50235±56
8-5/8 x 12-1/4"223-2283-5650±50330±58
9-5/8 x 12-1/4"250-2553-5650±50330±58
10-3/4 x 12-1/4"274-2763-5650±50330±59

Company information
The predecessor of Henan 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 60,840,000 yuan, 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 38,600,000 yuan. It has a strong mechanical processing capability.

Our leading products are pumping unit , wellhead (X-mas tree), tubing pump & sucker rod pump, cementing accessories, down-hole tools,casing centralizer, drilling solid control series,float collar, pressure vessel ,camping house, air cannon, belt feeder ,float shoe 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 for.

With strong technical backup, reliable product quality, advanced marketing regime and good service system, this company wins popularity and recognition of vast consumers home and abroad.
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