| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a method for fitting a pipe joint that can reduce cost and time required for connecting a protection pipe, when embedding a protection pipe for inserting an electric wire cable or the like into the ground. SOLUTION: A connection hole 5 is formed passing through a thin part 3 of a casing 2, and a pipe joint 6, made of a external screw joint piece 7 and an internal screw joint piece 8 is fitted into the connection hole 5 by dry process. Thus the pipe joint 6 is mounted on a manhole 1, in a shape sandwiching the casing 2 from the inside and outside, to complete the fitting operation of the pipe joint 6.</p> |
