| 摘要 |
PURPOSE:To improve the workability of a troublesome process of removing the connection-scheduled parts of a fluid conduit in an annular manner so as to maintain the temporary joining of a branch joint when the branch joint is connected to the external circumferential surface of a plastic pipe which is internally inserted onto the internal surface of the fluid conduit. CONSTITUTION:A first through hole 1a which is larger-diametered than a branch joint connection part 3a for a plastic pipe 2 is formed in a fluid conduit 1. After the connection part 3a is brought into contact with the plastic pipe 2, a temporary joining jig 4 is inserted into the branch joint 3 so as to execute the temporary joining of the condition, and fitted so that the first engaging part 4a is engaged with the internal surface of the circumferential edge part of the second through hole 2a, and the second engaging part 4b is engaged with the branch joint 3. Until the fusion joining between the connection part 3a and the plastic pipe 2 is completed, the first engaging part 4a and the second engaging part 4b are pulled together to complete the fusion joining while the temporary joining being executed. After this operation, the temporary joining jig 4 is removed. |
