FRP (GRP) Fittings and Valves in the world.  Conley Corporation manufactures corrosion resistant Nexus reinforced filament wound fiberglass pipe and fittings, valves and strainers,  complete FRP fiber glass reinforced plastic (GRP glass fibre reinforced plastic) piping systems and marine piping.filament woundAs industry leaders from the inception of the FRP Piping Industry, we held world patents and manufactured the first