CS-NRI Syntho-Glass XT Extreme Strength Pipe Repair Kits



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    Syntho-Glass®XT system is a unique pre-impregnated, bi-directional composite used to repair and reinforce both internal and external corrosion on pipes or structures. This factory-saturated product ensures proper fiber-to-resin content ratios which are crucial to reliable performance. The Syntho-Glass XT system provides an engineered solution to your pipe repair needs which requires Engineering Intervention from CS-NRI.

    Part Number Wrap Size Width (in) & Length (ft) Pipe Size coverage by wrap
    XT215 2in x 5ft ½ to 1 in
    XT430 4in x 30ft 4 to 6 in
    XT460 4in x 60ft 4 to 8 in
    XT615 6in x 15ft 8 to 10 in
    XT630 6in x 30ft 8 to 10 in
    XT660 6in x 60ft 8 to 10 in
    XT830 8in x 30ft 12 to 16 in
    XT860 8in x 60ft 12 to 16 in
    XT1260 12in x 60ft 12 to 16 in


    Typical Applications

    • Pipeline integrity
    • Transmission and distribution pipe lines
    • Oil and gas risers
    • Girth welds on vessels and pipe lines
    • Straights, elbows, tees, flanges
    • Process piping: chemicals, oil, gasses, water, and steam
    • Atmospheric corrosion


    • Moisture-cured polyurethane resin reduces composite preparation time by over 50%
    • Non-shielding
    • Pre-saturation optimizes fiber-to-resin ratio and provides a material with a constant strength property
    • Can be applied to damp, sweating, or immersed surfaces
    • No heating or post-curing required
    • Can be applied to any geometry including, but not limited to elbows, Tees, and flanges
    • Design conforms to ASME PCC-2, ASME B31, ISO TS24817, DOT, API, and CSA Z662
      standards for nonmetallic reinforcing solutions

    Pot Life

    • 20 minutes @ 75°F (24°C), less at higher temperatures


    • Application temperature: minimum of 40°F (4°C) and maximum of 150°F (66°C)
      Maximum service temperature: 194°F (90°C)

    Related Products

    The following products are system components of the Syntho-Glass XT system:

    • Filler: Syntho-Poxy™HC, Syntho-Steel
    • Anti-Corrosion Primer: Syntho-Subsea™LV Epoxy
    • UV protection: Syntho-Coat or Syntho-Glass®UV
    • Compression Film


    Tensile Modulus 3.59 Msi (24.78 GPa) 1.96 Msi (13.51 GPa)
    Thermal Expansion Coefficient 6.47 ppm/°F (11.65 ppm/°C) 29.00 ppm/°F (52.2 ppm/°C)
    Hardness Shore D
    Laminate Thickness 0.013" (0.33mm)
    Poisson Ratio 0.1326
    Energy Release Rate 0.525 in-lb² (92 J/m²)



    • Syntho-Glass XT was designed to conform to ASME PCC-2, ASME B31, ISO TS24817, DOT, API, and CSA Z662 standards for nonmetallic reinforcing solutions. Consult NRI Engineering for specified use.

    Surface Preparation

    • Surface preparation and profiling shall promote continuous intimate contact between the FRP system and pipe by providing a clean, smooth, and circumferential surface. Surface preparation shall be in accordance with SSPC-SP1 “Solvent Cleaning” and SSPC-SP11 “Power Tool Cleaning” with a 1-3 mil surface roughness (25-75 microns) minimum. If existing coating is
      present, roughen to degloss. NRI’s composite repair systems are bond-critical and require a strong adhesive bond between the clean pipe and the composite system.


    • Installation of the Syntho-Glass XT System shall be performed by NRI qualified applicators only. Surface preparation, mixing of epoxy, and installation of the system are to be in accordance with NRI’s Syntho-Glass XT Installation Guide, latest revision. Quality control inspection during and after installation of the Syntho-Glass XT system shall be performed per NRI’s Installation Validation Procedure: Quality Control Records, latest revision.

    Cure Schedule

    50°F (10°C) 60 Minutes 120 Minutes
    60°F (16°C) 40 Minutes 75 Minutes
    75°F (24°C) 20 Minutes 40 Minutes
    90°F (32°C) 12 Minutes 20 Minutes
    150°F (66°C) 2 Minutes 100 Minutes


    Shelf Life is 12 months when stored in original, unopened packaging, indoors at a maximum temperature of 95°F (35°C)

    Additional information available on the Safety Data Sheet and Technical Data Sheet.

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