| 摘要 |
A pipe joint includes a socket, a plug, a retaining unit for preventing the plug from being drawn out from the socket, a seal ring arranged at an inner periphery of the socket and a hold ring arranged at the inner periphery of the socket for preventing the seal ring from being moved. A projected portion is formed at a position of the inner periphery of the socket for attaching the hold ring, and the hold ring includes a notched portion or a recess portion for engaging with the projected portion, and a projected portion projected in a direction of an inserting port of the plug, and the plug includes a ring-like projected portion for engaging with the retaining unit, and a recess portion or a flat portion provided at the ring-like projected portion to engage with the projected portion of the hold ring. |
