| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a connector part of a corrugated pipe which is strong in tension, is hardly broken and is stable in connection, and is hardly drawn out or undergoes similar failure, when the corrugated pipe is connected to another pipe, and also to provide a manufacturing method for the same. <P>SOLUTION: The corrugated pipe is equipped with an outer layer tubular section and an inner layer tubular section, and is made of a thermoplastic resin in which a large diameter portion and a small diameter portion are formed so as to be alternately repeated toward the axis of pipe. The outer layer tubular section and the inner layer tubular section are integrally joined by thermal fusion, so that either or both ends of the corrugated pipe become a cylindrical reinforced connector having a predetermined diameter, and an EF joint is formed by aligning the axis of the pipe with the reinforced connector. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
