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FlexSleeve® for Thin Linings

Internal Sleeve Innovation


Flexibility : Thin-gauge assembly adjusts to pipe shape for easy insertion & consistent seal quality.

Sealing : Bore seals accommodate pipe ID tolerances and seal at any pipeline pressure.

Weld Quality : Flexibility allows for a better fit, easier root pass, and more consistent weld quality.

Heat Resistance : Wider sleeve & thicker insulation reduces heat impact & does not slow down welding.

Large Diameters : Accommodates out of round pipe

Automatic Welding : Compatible with internal lineup clamps & automatic welding

Patents Pending

CCB® Sleeve for Thin Linings


The CCB® sleeve is synonymous with internal weld sleeves due to it being one of the original patented products for this technology. It has been used to successfully protect hundreds of thousands of welded pipe joints from internal corrosion over the past 25 years.

Lined Pipe Systems is proud to have acquired this cutting-edge technology and is thrilled to present it as a formidable alternative to FlexSleeve. This holds particularly true for diameters 12” and smaller, where the CCB® sleeve demonstrates optimal functionality, ensuring robust protection for welded pipe joints against internal corrosion. Trust in the reliability and proven performance of the CCB® sleeve for safeguarding your assets in the long term.


  • 25+ years of successful case history

  • Sets market standard for quality

  • Tighter seal than competitors

  • Long sloped profile allows for pigs to pass and less head loss

How to Protect Thin Linings with CCB® Sleeve

SealSleeve™ for Rubber & PU Linings

Reliable & Economical Slurry Transport

Why SealSleeve™? Owners of slurry pipelines often want to use an abrasion-resistant internal lining to ensure the pipeline lasts. However, mechanical joints have historically been required for lined pipe and the cost can be prohibitive – particularly for higher pressures.

LPS’ SealSleeve™ system allows for standard full penetration welded joints and fast construction of pipe internally lined with rubber and polyurethane. SealSleeve™ is lined with the same polymer as the pipe and has built-in insulation and seals that permit lining continuity through weld zone.

LPS technology makes projects economically feasible that otherwise would not be while eliminating the possibility of leaks that are common with mechanical joints.

Reliable : Rubber and polyurethane linings provide optimal long-term abrasion & corrosion protection.

Cost effective : Far less expensive than flanged joints. Far longer-lasting than pipelines without a lining.

Leak-free : Welded joints are stronger than mechanical joints and eliminate the possibility of leaks.

Permits field bends : Eliminates the need for shop-fabricated custom hot bends on long distance slurry lines.

Easy field length adjustments : Length adjustments / tie-ins with mechanical joints can add weeks or months to a project.

Mechanical joints are expensive, weaker than the pipe wall, and leak-prone


Full penetration welded joints are cost-efficient, as strong as the pipe wall, and leak-free.


How It Works


SealSleeve™ lining thickness and pipe end preparation adjusted to meet project requirements.

SealSleeve™ for Thermoplastic Liners

Plastic Liner Locked

Plastic liner locked to pipe wall using proprietary method. This creates an immovable seat for SealSleeveTM to seal against

Seal Sleeve Insertion

SealSleeveTM inserted into 1st pipe end, sealing against the immovable seat.

SealSleeve Interior

2nd pipe comes over SealSleeveTM end protruding from 1st pipe and weld is performed, allowing for a plastic liner through the weld zone.


  • Fast Joint Construction: Ideal for offshore J-Lay / S-Lay vessels and shorter lined pipe sections requiring more frequent joint connectors.
  • Highly Repeatable Joint Quality:  Seal design is well proven and easy to install with consistent quality.
  • High Pressure Applications: Withstands whichever pressure the pipe can withstand.
  • Standard Carbon Steel Welds: Permits standard full penetration welds and NDE for carbon steel pipe.

Patents Pending

Pipe Lining Materials Used with LPS Joint Technology

Carbon steel pipe with welded joints provides optimal strength and ductility for pipelines. However, virtually any liquid or slurry being transported via pipeline (except sweet oil & gas) will corrode steel. LPS’ welded joint system permits the use of carbon steel pipe with polymer lining materials that provide long-term protection of the steel. The following are some of the premium lining materials used in conjunction with LPS FlexSleeves and Joint Lock Rings to keep pipe interiors from corroding.

Aromatic Polyurethane

  • Withstands stress from pigging and
    internal lineup clamps

  • Sufficient flexibility and elongation for thermal expansion, pipe handling & cold bends

Thermoplastic Polyurethane

  • Excellent abrasion resistance & sufficient thickness for highly abrasive slurries
  • Superior physical properties (tensile, tear, elongation)
  • Very good adhesion to steel

Natural & Synthetic Rubber

  • Excellent abrasion resistance & sufficient thickness for highly abrasive slurries

  • Superior resilience and elongation

  • Excellent adhesion to steel

  • Synthetic rubbers are resistant to high temperatures & various chemicals

Fusion & Liquid Bonded Epoxy

  • Cost-efficient corrosion protection for water pipelines

  • Excellent adhesion to steel

  • Good chemical resistance

  • Novolac & phenolic epoxies provide very good heat & chemical resistance

Thermoplastic Polyamides (Nylon)

  • High flexibility

  • Good heat resistance

  • Good abrasion resistance

  • Resistant to oils and many chemicals
  • Low moisture absorption

Hi-Density Polyethylene

  • Very low water permeation

  • Good abrasion resistance

  • Sufficient thickness to eliminate possibility of liner pinholes

What’s The Solution for Your Next Project?

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Common Pipeline Applications

Most liquids being transported by pipeline are corrosive to carbon steel. The following are common applications for LPS joint technology:

Oil & Gas

  • Produced Water

  • Sour Oil & Gas

  • Sea Water Injection
  • Fracking Water


  • Continental Water

  • Desalinated water

  • Wastewater


  • Process water

  • Tailing Slurry

  • Coarse Ore Slurry

  • Concentrate Slurry

  • Solution Mining (Brines)

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