| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pipe joint which surely prevents a liquid from intruding into its inside, and also, surely prevents occurrence of damage due to underground stones without increasing manufacturing costs, and also to provide its forming method, and a piping connection method using the same. <P>SOLUTION: A permeation preventing member 18 is provided on the outer peripheral face 14b of a joint body 14 so as to cover the joint body 14 of the pipe joint 11 from its outside. A protection member 21 having heat shrinkability is arranged so as to cover the joint body 14 above the permeation preventing member 18. The protection member is shrinked by heating so as to make the aperture of the protection member small. By the shrinkage, the permeation preventing member 18 is clamped between the protection member 21 and the joint body 14. <P>COPYRIGHT: (C)2007,JPO&INPIT |
