Corrocoat offers a comprehensive range of materials and corrosion engineering solutions to negate the effects of corrosion and abrasion damage in water pipes. Corrocoat linings reinforced with glass flake are regularly used in combination with GRP composite laminates to give structural strength to refurbished pipes and provide a longer corrosion-free life than replacement with new.
A recent example of this is in South Africa where the Department of Water Affairs contracted Corrocoat SA to repair a small bore pipe connected to an underground main pipe at Onverwacht Reservoir. The steel pipe was suffering from internal corrosion, which had resulted in pin holes, leading to leaks near a valve. During repair the pipe had to remain under pressure as it could not be taken out of service.
Corrocoat Engineers wrapped multiple layers of carbon fibre composite reinforcement around the pipe, interlayered with Polyglass water proofing compound. Finally, a layer of a synthetic cloth was applied to produce a smooth surface that also improves adhesion of a final layer of UV stable Polyglass.