Oil-and-gas transport pipelines — regardless of base alloy — face corrosion attack. Protecting and repairing defective pipe is one way to extend service life, and composite repair is the safer, more convenient and faster method.
Unlike replacement or clamp repair, composite repair wraps the damaged section in carbon-fiber cloth bonded with high-strength resin. The resulting composite layer shares hoop stress with the host wall, dispersing the stress concentration at the corrosion site and delivering reinforcement.
The composite layer cures and binds tightly with the host pipe. Carbon fiber's high tensile strength, high modulus matched to steel, and excellent creep resistance mean the layer's contribution stays stable over service life. The thin profile also leaves room for the original corrosion-protection scheme.
For heavily corroded long-haul lines, composite repair offers a deployable engineering solution without shutdown — minimising operational and economic impact.