OBH-W welded hinged Bow Spring Centralizer

OBH-W welded hinged Bow Spring Centralizer

The OBH-W is a hinged, welded, bow spring centralizer designed with a new hinge that tests stronger than competitors.

The OBH-W hinged centralizer features heat-treated, spring-steel bows which are welded to rigid high strength end bands for optimized stand-off in less challenging wells.

The OBH-W utilizes Centek’s unique metallurgy and heat treatment process to develop strength and flexibility. Minimal start and running forces ease the casing to TD.

Tested to API 10D specification, the OBH-W centralizer consistently provides superior performance.

The integrated hinge has been developed for quick installation and with the axial load strength of our OBW non-hinged product.

It is designed for onshore, vertical and slightly deviated applications where an economic solution is preferred but performance is expected. An economical choice, the OBH-W can be used over casing couplings to remove the need for stop collars.

As with Centek’s other hinged products, the OBH-W can be nested on a pallet, taking up to 66% less space than its non-hinged counterpart. This can reduce transportation and storage costs by up to 30%. In addition, the unique integrated hinge ensures a quick installation process.

Features and benefits

  • Designed to exceed API 10D
  • Can be used over casing couplings
  • Good centralization in less challenging wells
  • Economic choice / high performance
  • Unique, high strength hinge

Targeted applications

  • Vertical wells
  • Slightly deviated sections of the wellbore
  • Onshore
  • Applications where slip-on centralizer can’t be used

Application for OBH-W welded bow spring centralizer

Stop collars

The OBH-W has a corresponding range of high strength hinged stop collars.

Performance ratings

Centralization and the ease of running casing is often a balance between strength and flexibility which combine to support, what we call, 'runability'. To help with product selection we've added a rating to all our products for flexibility, runability and inherent strength.


Ratings OBH-W welded bow spring centralizer


Available to suit casing sizes ranging from 4 1/2" to 26".

For more information talk to our Product Service Experts today or use our Product Selector Tool to find the right product for your application.

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