To provide a joint structure of piping, capable of eliminating the need of cutting a part of fluid piping even when the fluid piping is temporarily cut off, easily connecting the fluid piping again even when it is reconnected, and preventing damage caused by thermal contraction or an external force.
The joint structure of piping for detachably interconnecting first piping 2 having an internal flow path and second piping 3 having an internal flow path is formed such that a first roughly cylindrical joint member 4 is fitted through on the upper outside of the first piping 2, a first doughnut plate 5 is placed on the upper end of the first piping 2, a second doughnut plate 6 is placed on the upper opening end surface of the first joint member 4, and a second joint member 7 is fitted into the opening of the second doughnut plate 6.
KAKIMOTO EIJI
JX NIPPON MINING & METALS CORP
TOHO TITANIUM CO LTD
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