| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a practical method for connecting pipes capable of instantaneously melting and solidifying connecting faces without requiring a special joint material and requiring no adhesive and seal tape, and an apparatus for connecting the pipes. <P>SOLUTION: The pipes 1 such gas pipes and sewage pipes are formed of, for example, a high density polyethylene synthetic resin material. These pipes 1 have the same inner diameters and outer diameters. At first, opening end faces of two pipes 1 and 1 are processed orthogonally to the longitudinal direction (the length direction of the pipes) and both pipes 1 and 1 are butted. Then, while a compressive stress is applied on these butted faces, the butted part of both pipes 1 and 1 are irradiated with an energy beam 2 from the outside to connect both pipes 1 and 1 together. <P>COPYRIGHT: (C)2008,JPO&INPIT |
