Internal coating technique for concrete pipes consists of application of resins of polyurethane and polyester, for centrifugation

The internal coating technique for concrete pipes comprises application of resins of polyurethane and polyester. The internal surface is coated by centrifugation, after injection of resins into the mating ends of the pipe. Method for the internal coating of concrete tubes using polyurethane and polyester resins in two stages: first, resins are injected into the spigot and bell that form the heads of the tube secondly, the inner surface is coated by centrifuge.< IMAGE >The internal coating technique for concrete pipes comprises application of resins of polyurethane and polyester. The internal surface is coated by centrifugation, after injection of resins into the mating ends of the pipe. Método de recubrimiento interno de tuberías de hormigón, usando resinas de poliuretano y de poliéster, en el que se distinguen dos fases: una primera de inyección de resinas en la espiga y campana que forman las cabeceras del tubo y una segunda de recubrimiento de la superficie interior del mismo mediante centrifugación. Method for the internal coating of concrete tubes using polyurethane and polyester resins in two stages: first, resins are injected into the spigot and bell that form the heads of the tube; secondly, the inner surface is coated by centrifuge.