Carbon-fiber composite pressure-pipe repair uses the fiber's high directional tensile strength, with epoxy resin fully impregnating the cloth and wrapping it around the defect zone to restore design strength.
The method is in-service and weld-free — avoiding the burn-through hazards of welding. The repair system has three core components: high-strength carbon fiber, high-strength filler resin, and a high-performance epoxy adhesive.
Workflow
Filler resin levels the defect; saturated cloth is wrapped over the levelled zone; multiple plies as designed; rolled along the fiber direction to expel air; cured at ambient temperature; outer corrosion protection applied and the pipe back-filled.
The technology is well-suited to long-haul oil and gas lines, urban gas networks, refinery and chemical pipework, and power-plant cooling water — anywhere weld repair is impractical or hazardous.