Viper-Skin™ by Neptune Research Inc (NRI)


Carbon Fiber Structural Repair System

Viper-Skin™ is the first bi-axial, hybrid carbon and glass fiber polyurethane pre-impregnated system that blends the unsurpassed strength and stiffness of carbon with the ease and use of a moisture-cured, factory-saturated fiber.



  • Transmission and distribution pipelines
  • Oil and gas risers
  • Mechanical dents and defects
  • Girth welds on vessels and pipelines
  • Straights, elbows, tees, and flanges
  • Process piping: chemicals, oil, gases, water, and steam


  • Moisture-cured polyurethane resin reduces composite preparation time by over 50%
  • Factory-saturation optimizes fiber to resin ratio and provides a material with a constant strength property
  • Non-shielding
  • 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 TS 24817, DOT, API, and CSA Z662 standards for nonmetallic reinforcing solutions