HEAT-RESISTANT RESIN PIPE AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To improve heat resistance properties of a resin pipe, used as fire- extinguishing pipeline for sprinklers. SOLUTION: The coating of a metal layer 4 on the surface of a resin tube 1 is improved in the heat resisting properties; a crosslinked polyethylene pipe is employed as the resin pipe; and the metal layer 4 is formed, by winding metallic tape on the surface of the resin pipe 1 with no gaps or by conducting metal evaporation.