Pipe joint

摘要

A pipe joint provided with a pipe joint main body (2) having an insertion cylinder portion (3) inserted to an end portion of a pipe (1) to be connected, a seal member (4) attached to a peripheral groove (7) on the insertion cylinder portion (3), a clamp ring (5) with a slit (51) for fastening the end portion of the pipe (1) outserted to the insertion cylinder portion (3) with elastic fastening force, and a diameter-extension piece (6) detachably held at the slit (51) as to extend the clamp ring (5) resisting the elastic force of the clamp ring (5) and detached by contact with a forth end of the pipe (1).