LINING PIPE AND MANUFACTURE OF THE LINING PIPE

摘要

PROBLEM TO BE SOLVED: To provide a lining pipe with less fear of communication from a bored hole to the inside of the lining layer even when the pressure of water coming through the bored hole opened in the pipe acts to the lining layer for a long time, and with less fear of leaking of fluid in the pipe owing to the breakage of the pipe. SOLUTION: A lining pipe has a lining layer 2 inside of a pipe 1. It is provided with an outside lining layer 2a which is attaching the lining layer 2 sticking to the inside circumference of the pipe and an inside lining layer 2b which is attaching the lining layer 2 sticking to the inside circumference of the outside lining layer. The outside lining layer is formed with soft material 3 equipped with water expansion nature to expand in volume by contact with water and elasticity. The inside lining layer is formed with hard material 4 equipped with a shape keeping nature.