Slip-On Welded Rigid Bow Centralizer (S-22)

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Slip On Welded Rigid Bow Centralizer from Eneroil Offshore is uniquely designed with a flat-bottom U-profile of different depths, which permit an extremely high fluid passage. These Slip On Positive 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 cased hole, while the end collars, being slip-on types, provide maximum structural toughness.
The premium-quality bows are strongly welded to the end collars and are made of a special alloy steel with uniform hardness providing optimum performance. Furthermore, the installation of Eneroil’s slip-on welded positive bow centralizers on the casing pipe is very convenient, as the centralizer can be slipped on the casing pipe from one end at the time of installation.

Performance Features

  • Eneroil’s slip-on welded 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 settings.
  • The bow springs are strongly welded to the end collar to provide extra robustness to the centralizer.
  • End collars are of widened-design for greater frame strength and to prevent the bows from hitting the casing.
  • 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 slip on welded rigid bow centralizers are available in sizes 4 ½” to 30”
  • Special sizes or combination can be made available on request
  • Hinged Stop Collar – S-60
  • Hinged Stop Collar with Spiral Nails – S-61 / S-62
  • Stop Collar with Set Screws with one side Beveled – S-65


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