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 meet our high quality assurance standards, 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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