| 摘要 |
A pipe joint comprises a spigot (40) and socket (20). The spigot (40) is provided with a formation (46) in an end region thereof and upon a radially outer surface or an end face thereof. The socket (20) is provided with a formation (27) located within the socket mouth (22), and arranged in such a position as to address and interfere mechanically with the formation (46) located upon the spigot end (40), when the spigot is fully inserted within the socket for indicating that the spigot is fully inserted within the socket.
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