| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved compact double pipe joint with an outer pipe joint as a protecting pipe integrated with a fluid transfer pipe joint (an inner pipe joint) to easily employ a double pipe having various kinds of advantages as a fluid transfer pipe. SOLUTION: The double pipe joint for connecting the double pipes H together each consisting of fluorine tube outer and inner pipes h2, h1 comprises an inner pipe connecting inner joint part T1 which is formed by a sleeve 2 to be internally fitted and pressed into an inner pipe end h1t, an inner pipe joint body 1 to be externally fitted thereto, and an inner pipe unit nut 3A, and an outer pipe connecting outer joint part T2 which is formed by a sleeve 4 to be internally fitted and pressed into an outer pipe end h2t, an outer pipe joint body 3B to be externally fitted thereto, and an outer pipe union nut 5. The inner pipe unit nut 3A and the outer pipe joint body 3B are formed on a body 3 with a nut in one unit. COPYRIGHT: (C)2006,JPO&NCIPI
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