To eliminate an inevitable error generated at the time of electric fusing work, so as to always obtain normal fusing connection.

This electric fusing joint 1 has a joint main unit 3 burying a heating wire 2 in a fusing part to a connected pipe 10, a bar code 8 coding a current carrying control parameter supplied to the heating wire 2 is mounted in the joint main unit 3. Here, in an electric fusing joint 1, an actually measured electric resistance value of the heating wire 2 is input to a data of the bar code 8.