Pipe with thick, flexible thermoplastic liners (i.e. HDPE, PVDF, PPS, PEX, PEEK) provides one of the safest ways to transport corrosive commodities.
Thermoplastic lined pipe is used for offshore and onshore oil production, mining slurries, and other aggressive applications.
Welded joint connections are often desired or required, particularly for offshore pipelines.
Thermoplastic polymer sleeve bridges the weld zone.
Permits standard full-penetration weld of carbon steel pipe.
Faster joint assembly than any other welded joint solution.
Prevents welding heat from damaging the plastic liner.
Prevents liquids from reaching the bare steel behind the liner.
Liner pulled through pipe and locked to pipe wall
Locking rings withstand >30 tons of force, ensuring liner will not move.
Liner insertion and locking to pipe wall may be done in shop, spool base, or in field.
Liner may be installed in any length of pipe section (12m or as long as currently possible).
SealSleeve™ inserted into pipe ends during pipeline construction & girth weld performed
View of plastic liner end. Plastic liner is locked in place using a steel locking ring embedded behind the liner, creating a stable, immovable seat for SealSleeve™ to seal against.
Continuous Liner Through Weld Zone
Insulation material in sleeve prevents welding heat from damaging plastic liner.
Infrared image of pipe exterior during welding
Infrared image of joint interior a moment later
Hydrostatic pressure tests up to 500 bar (7,200 psi), without a weld.
The higher the pressure, the tighter the seal.
Our welded joint system changes the way internally lined pipelines are built. At last, a system that uses ordinary construction methods AND provides long-term protection from internal corrosion and erosion. It’s what’s on the inside that counts.
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