| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve durability of a flexible tube by performing required and sufficient protection to a straight pipe part of a tube main body. SOLUTION: A tube is formed by fitting a blade 6 around a thin tube main body. A nut 14 is rotatably fitted on at least one end of the tube main body, a ring body 7 to be approached to the nut 14 and having a recessed part 8 on the inner surface is fitted on the tube main body through the blade 6, and the blade 6 is fixed on the end 9 of the recessed part 8 of the ring body 7 by expanding the tube main body 1 in the recessed part 8 into a projecting shape.</p> |
