The ST-L™ connection is an integral true flush joint premium connection for severe liner applications incorporating metal-to-metal internal and external radial flank seals, a twin lead premium thread form with a negative tensile load flank and a 15° reversed external torque shoulder. *VAM USA offers the ST-L™ connection only in the U.S.
APPLICABLE RANGE
- Available for sizes from 2 3/8″ to 14″
- Standard, alternative and special drifts
- Carbon, Martensitic stainless steel (13%Cr & Super 13%Cr), Duplex, Super Duplex and Nickel base Alloys.
APPLICATIONS
- Drilling and Production Liners
- High Tension Applications
- Other applications where maximum clearance is required
PERFORMANCE
- Internal and collapse pressure ratings equal to the API Pipe body rating
- Tension rating up to 70% of pipe body yield strength.
BENEFITS
- 15° Reverse angle torque shoulder provides protection against damage if over torqued.
- Torque stored in thread body increases torque capacity and helps reduce back off.
- 45° stab/compression load flank stabs easily, reduces cross threading.
- Negative 9° load flank reduces the possibility of thread jump-out and insures predictable tensile performance.
- Two-Start thread allows for fast make-up.
OPTIONS
- Optional Teflon® seal ring.