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Canada Office Phone: 780-784-9710

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EngRx has developed a line of steel repair sleeves for standard butt weld elbow type fittings. The sleeve is a pressure retaining weld-on type, similar to “Type B” straight line repair sleeves. The purpose of the sleeve is to repair defects consistent with in-service piping elbows, such as internal/external erosion & corrosion, dents, gouges, pinholes, or weld defects. The sleeves are designed to be installed while the damaged line is active or live.

Technical Information


  • 1/2-24 NPS 90° ASME B16.9 LR Elbows


  • ASME B16.5 Class 150/300
  • ASME B16.5 Class 600
  • MDMT: -50 °F
  • Corrosion Allowance: 1/16 in [1.6 mm] standard


  • SA-105/SA-350 Gr. LF2 Cl. 1 (Dual Certified, Pressure Grade Forging)


  • ASME B31.1
  • ASME B31.3
  • ASME B31.4, Design Factor 0.60
  • ASME B31.8
  • ASME Section VIII Div. 1
  • CSA Z662 General Service, Location Factor 0.80
  • CSA Z662 Steam or High Temperature Service


  • Position top and bottom sleeve halves and tack weld in place
  • Complete longitudinal weld seam between sleeve halves (weld prep provided)
  • Complete circumferential welds on sleeve ends
  • Perform weld NDE


  • Backing strip for longitudinal seams
  • Vent coupling(s)
  • Weld prep on circumferential ends for groove welds


Note that deviations from any of the information provided above may be available
upon request.

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