| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pipe joint capable of ensuring sealability without using a gasket for a long period. <P>SOLUTION: The pipe joint has a first joint member 10, a second joint member 20, and a coupling means 30. The first joint member has a first pipe body 11, a first flange 12 formed in an end to which the first pipe body is coupled, and an annular engaging protrusion 13 protrudingly formed from a front end surface of the first flange. The second joint member has a second pipe body 21, a second flange 22 formed in an end to which the second pipe body is coupled, and an engaging hole 23 concavely arranged in a front end surface of the second flange, gradually reducing a diameter of an inner peripheral surface as going toward a deep part of the second flange, and having an engaging hole 23 formed in an engaging taper surface touched by the engaging protrusion. A front end annular part of the engaging protrusion contacted by the engaging taper surface is formed in an around surface 13C. <P>COPYRIGHT: (C)2013,JPO&INPIT |
