| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe fitting to relatively interconnect non-rotatably a pair of joints (two pipes) and peripherally position a pair of joints and facilitate connection in a given position relation, constitute a coupling fit in a small and simple state, and inseparably firmly interconnect a pair of the joints through a coupling fit therebetween. SOLUTION: A plurality of engaging protrusion parts 15 and a plurality of engaging recessed parts 16 are peripherally alternately formed on and in the tip part of a first joint 1, and a plurality of engaging protrusion parts 25 and a plurality of engaging recessed parts 26 are peripherally alternately formed on and in a second joint 2. In a state that a plurality of the engaging protrusion parts 15 and 25 of the second joints 1 and 2 are engaged with a plurality of the engaging recessed parts 26 and 16 of the joints 2 and 1 on the mating side, an elastic coupling fit approximately into a ring-form state is mounted on outer recessed grooves 41 of a plurality of the engaging protrusion parts 15 and 25 of the two fittings 1 and 2 to interconnect the two fittings 1 and 2.
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