| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pipe connecting cap which is designed to close a pipe connecting area which can connect stably pipe bodies which are different in size. SOLUTION: A pipe holding cylinder 26 is integrally formed with a connecting cylinder 26 which is designed to be connected to a pipe connecting area. A ring-shaped cutting-off groove 22, which is thin-walled on the peripheral edge, is formed on the pipe holding cylinder 26. A cutting-off starting groove 23 is formed so that one end of the groove may be connected to the cutting-off groove 22, thereby forming integrally a connecting opening closing piece 21 which forms an operation piece 24 on the surface near the cutting-off starting groove 23.</p> |
