| 摘要 |
PURPOSE: A pipe joint is provided to prevent a lead end of a pipe from being oxidized while sealing the pipe joint by using a packing member inserted into a stepped portion of the lead end of the pipe. CONSTITUTION: A plurality of coupling holes(3), into which coupling bolts are screw-coupled, are formed on an opening section(4') of a flange(2) formed in a joint body(1). A screw type locking groove(4) is formed at an inner peripheral wall of the opening section(4'). The screw type locking groove(4) includes an enlarged portion(a) and a narrow portion(b). A locking jaw(9') formed at a lead end of a connection pipe(9) is inserted into the screw type locking groove(4). A ring slot(5) is formed at an inner wall of the flange(2). A packing(7) having the first sealing jaw and the second sealing jaw are inserted into the ring slot(5). A locking groove is formed at a stepped portion(6) into which a locking jaw formed in an O-ring(8) is inserted.
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