​VAM® FJL (Flush Joint Liner) is a 100% inside and outside flush integral connection providing maximum clearance with​ optimum strength for liners, moderate depth casing, and tight-hole tubing strings.

 Applicable range

  • Available in sizes from 

2 3 /8" to 11 7/8"

  • Yield strengths from 80 ksi to 140 ksi
  • Standard, alternative and special drifts
  • Carbon, Martensitic stainless steel (13%Cr & Super 13%Crand Nickel base Alloys.​​


  • Drilling, production  and  contingency liners
  • Moderate depth production casing /slim hole designs
  • Tiebacks in medium sizes
  • Tight hole tubing strings in small sizes​.


  • Integral Flush Design.  The O.D. and I.D. are 100% flush (there is no upset). The I.D. is bored and recess-free for smooth, efficient flow. The O.D. is turned to tight tolerances.
  • Multiple Seal System. This multiple seal arrangement ensures gas-tight sealing integrity to 100% of the rated burst and collapse of the pipe body.
  • Interference Tapered Thread. Thread load flank has a 15° reverse angle to resist jump out. Thread stabbing flank has a 45° angle for fast, trouble-free make-up.
  • In order to provide optimum strength, the VAM® FJL is designed for 65% to 70% efficiency under tensio​n in medium wall thickness.
  • The design of VAM® FJL exhibits an exceptional bending resistance for a connection of this class.
  • Excellent gas tightness.


  • Maximum clearance (100% flush)
  • Easy to use and repair
  • Only slight pin end swaging is needed for machining threads.​