| 摘要 |
<p>PURPOSE: To prevent the leakage of fluid in a pipe from occurring even if external force such as earth pressure, wheel load, etc., acts to deform a joint section into a flat-shape. CONSTITUTION: A socket 11 is provided to one end of a pipe body 1 of synthetic resin and, at the same time, a spigot 12 is provided to the other end. When the spigot 12 of the other pipe body 1 is inserted to the socket 11 of one pipe body 1 to connect, water expansive rubber 2 is made to lie between the socket 11 and spigot 12. By the constitution, pipe fluid is not leaked even if a joint section is deformed into a flat-shape.</p> |
