| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manufacturing method capable of easily and speedily fixing a spiral guide plate to a pipe main body in a stable condition and obtaining a pipe with a spiral guide passage. SOLUTION: In this method for manufacturing the pipe with the inner face spiral guide passage, divided pipe pieces 1a, 1b obtained by dividing the pipe main body into two or more portions along its pipe axis are formed, and a divided end fringe 11a of the divided pipe piece 1a and a divided end fringe 11b of the divided pipe piece 1b are mutually joined and integrated while the spiral guide plate 12 is arranged on inner faces of these divided pipe pieces 1a, 1b.</p> |
