Model : S20


Non-welded Hinged Positive Bow Centralizer

Eneroil's non-welded hinged positive bow centralizers are uniquely designed with a flat-bottom U-profile of different depths, which permit an extremely high fluid passage. These centralizers may be used for both casing and tubing applications that require concentric casing strings. The straight bows provide nearly 100% stand-off (concentricity) when running inside a deviated cased hole, while the self-locking design of the centralizer ensures a firm hold. Furthermore, the non-welded structure eliminates brittle spots and enhances durability.

Performance Features

  • Eneroil’s non-welded hinged positive bow centralizers are designed for centralising the casing pipe in vertical, deviated, and horizontal wells
  • High-quality steel alloy bows with flat bottom U-profiles of different depths permit an extremely high fluid passage.
  • The formed U-profile bows provide a superior stand-off and more effective centralisation than conventional bow centralizers. This enables efficient liner hanger and packer setting.
  • These centralizers are highly suitable for stage and surface cementing.
  • Hinge locking pins are made of high-strength steel for maximum structural strength.
  • Bows can be configured for any hole diameter with a choice of various standard bow heights for optimum performance and centralisation to suit the outer casing combinations.
  • Its high performance characteristics are combined with an easy field assembly.


  • Eneroil’s non-welded hinged positive bow centralizers are available in sizes 4 ½" to 30”
  • Special sizes or combination can be made available on request

Recommended For Use With

  • Hinged Stop Collar – S-60
  • Hinged Stop Collar with Spiral Nails – S-61 / S-62
  • Stop Collar with Set Screws – S-63