Thermo-Wrap™ CF

Thermo-Wrap ™CF is a custom-engineered, carbon-fiber composite system utilizing a high strength, biaxial hybrid carbon and glass fiber in conjunction with NRI’s proprietary ThermoPoxy™ epoxy system for the repair and restoration of pipes, structural integrity, and corrosion protection. A unique advantage is that Thermo-Wrap ™CF is designed to maintain high tensile strength at high temperatures.


DatasheetsSDS Sheets
InformationTesting DataCase Studies
Typical Applications

  • Flare lines
  • Steam piping
  • Girth welds, elbows, tees
  • Chemical processing lines
  • Anywhere elevated temperatures are of concern or expected


  • High temperature rating with an ambient cured epoxy
  • No heating or post-curing required
  • Full factory engineering calculations, consultation, and support
  • High tensile strength and stiffness


Sold based on square foot of coverage


As determined by NRI engineering calculations

Mixing & Mix Ratio

Power mix Part A, then combine with Part B and power mix. Do not mix partial kits. Resin to hardener 100:27 by volume.

Pot Life

75 minutes @ 75 ˚F (24 ˚C), less at higher temperatures


  • Epoxy application temperature: minimum of 50 ˚F (10 ˚C) and maximum of 200 ˚ (93 ˚C)
  • Maximum allowable sustained humidity must be less than 90%

Related Products
The following products are system components of the Thermo-Wrap CF system:

  • Thermo-Fill HC
  • Thermo-Poxy
  • Syntho-Coat or Syntho-Glass UV


Thermo-Wrap CF 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 CFRP system and pipe by providing a clean, smooth, and circumferential surface. Surface preparation shall be in accordance with SSPC-SP1 “Solvent Cleaning” and SSPCSP10 / NACE 2 “Near White Blast Cleaning” 1-3 mil surface roughness (25-75 microns). The Thermo-Wrap CF composite repair system is a bond-critical composite repair system requiring a strong adhesive bond between the clean pipe and the Thermo-Wrap CF system.


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

Cleanup and Safety

For proper information regarding the safe handling, storage, and disposal of chemical products, users shall refer to the most recent SDS, latest revision, containing physical, ecological, toxicological, and other safety-related data.

Shelf Life

Epoxy: 12 months with proper storage Fabric: 12 months with proper storage

Storage Conditions

Epoxy: store in original, unopened containers, indoors at a max temp of 95°F (35°C).
Fabric: store at temperatures below 100 ˚F (38 ˚C) away from moisture or any contaminants, in original packaging


Thermo-Wrap CF is supplied in kits which contain:

  • Thermo-Wrap CF dry fiber ranging in widths from 2” (5cm) to 12” (30cm)
  • Thermo-Poxy ranging from pint to gallons for the following coverages: 20ft2 (1.8m 2), 40ft2 (3.7m 2), 80ft2 (7.4m 2), 160ft2 (14.8m 2)
  • Typically ships in 17” x 15” x 14” boxes (43cm x 38cm x 36cm)

Composite Laminate Properties

PropertyCircumferential DirectionAxial Direction

Tensile Modulus
8 Msi 2.29 Msi (15.8 GPa)
Thermal Expansion Coefficient3.2ppm/
10.31 ppm/
PropertyTypical Test Value
Laminate Thickness 0.018 ”
Poisson Ratio 0.132
Shore D Hardness 90@ 75ºF (24ºC)

Cure Schedule

TemperatureWorking Time Set Time
50°F (10°C) 3.75 hours24 hours
60°F (16°C) 2.5 hours 12 hours
75°F (24°C) 1.25 hours 4-6 hours
90°F (32°C) 35 minutes 3 hours
200°F (93°C) 30 seconds1 minute