| 摘要 |
PURPOSE: A pipe-joint coupling is provided to firmly combine pipes and to surely seal by making the smooth outer circumferential face of a pipe to the inner circumference of a round packing. CONSTITUTION: An insertion groove(12) is formed on the inner circumference of a front end(11) of a socket(10). A round packing(13) is inserted to the insertion groove. A horizontal female screw(14) is formed on the inner circumference of the insertion groove. A horizontal male screw(2) of which length is the same as that of the horizontal female screw is formed on the outer circumference of the front end of a pipe(1). The horizontal male screw of the pipe is inserted to the inner circumference of the front end of the socket to be combined with the horizontal female screw of the insertion groove.
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