| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piping material that can reduce a joint portion, can reduce the number of piping construction processes, and in which a metal-made intermediate layer of the end face of a complex pipe does not contact with fluid such as water flowing therein, and to provide a manufacturing method of the piping material which can easily manufacture the piping material without generating a variation in rigidity caused by an environment and a human being, and without imparting damage to the complex pipe even if the complex pipe being a piping body is lengthy. <P>SOLUTION: A diameter-expanded cylinder 31 of a disengagement prevention member 3a having an engagement part 32 is externally fit to a diameter-expanded part 1b formed at one end of the complex pipe 1, the diameter-expanded part 1b, the disengagement prevention member 3a and an in-core member 2 are set in a metal mold 8 while an in-core body 21 of the in-core member 2 is internally fit, resin which is the same as that of an inner layer 12 of the complex pipe 1 is injected into a cavity 81, an injection resin part 4a is molded, and an interface between the injection resin part 4a and the inner layer 12 is fused. <P>COPYRIGHT: (C)2012,JPO&INPIT |
