| 摘要 |
PURPOSE: A joint pipe is provided to ensure tight joint through the combination of a watertight ring and a separation prevention ring on which the elasticity of the watertight ring is exerted. CONSTITUTION: A joint pipe(200) includes a socket in which one end of a straight pipe is inserted. The socket(210) comprises a mounting groove(220) formed along the inner surface, a watertight ring(230) installed on one side of the mounting groove, a holder(240) with a placing groove(241) which is formed in contact with the watertight ring on the other side of the mounting groove, and a separation prevention ring(250) is mounted on the placing groove of the holder.
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