| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water cut-off method for a fitting pipe opening allowing full and close contact of a flange and a main pipe, and being excellent in construction property when forming the flange by expanding a protrusion of a reproduced pipe protruded from a fitting pipe into the main pipe. SOLUTION: In this method, a sheet type cut-off member 4 made of synthetic rubber adhesive compound as a main material is adhered to periphery of the fitting pipe opening 12 of the main pipe 1, and an opening 45 corresponding to the fitting pipe opening 12 is formed on the cut-off member 4. Thereby, the brim-type flange formed on tip of the reproduced pipe is closely contacted on inner surface of the main pipe 1.</p> |
