| 摘要 |
PROBLEM TO BE SOLVED: To enable connection of profiles in each of which a metallic reinforcing material is buried, in a state wherein the respective reinforcing materials of the profiles are joined together firmly. SOLUTION: Profiles 10 of which side edge parts on one side are put in a state of engagement on the occasion when the profiles are so wound helically as to be along the inner peripheral surfaces of existing pipes have strip-plate-like base main body parts 11 made of synthetic resin and having flexibility, respectively. The base main body part 11 is provided with a reinforcing part 18 so that a hollow part 10a having a triangular section and being continuous in the longitudinal direction is formed, and a metallic reinforcing material 19 is buried in the reinforcing part 18 continuously in the longitudinal direction. In the case when the profiles 10 in a pair are connected, the end faces of the base main body parts 11 are fused to each other in a state wherein side parts of a metal joint 20 are inserted into the respective hollow parts 10a of the profiles. The reinforcing part 18 is shaven off thereafter so that the reinforcing material 19 be exposed, and the side parts of the reinforcing materials 19 and the metal joints 20 are spot-welded to each other respectively. |
