| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that the quality of a weld joint part between a pipe and a pipe joint cannot sufficiently be obtained, and the insufficient quality appears after a certain period of manufacture. <P>SOLUTION: A pipe arrangement 1 includes the pipe 2 and the pipe joint 3 formed with a peripheral groove 6 having a groove bottom 12 at its front face 5. The pipe 2 can be inserted into the groove 6, and can be welded to the pipe joint 3. At least one of penetration holes 14, 14' is formed for connecting the groove 6 to the surrounding of the pipe joint 3, and arranged so as to be friction-welded. <P>COPYRIGHT: (C)2012,JPO&INPIT |
