PIPE JOINT, AIR CONDITIONER, METHOD FOR PRODUCING CONNECTING PIPE, CONNECTING PIPE, AND CONNECTION METHOD

摘要

A pipe joint (10) is connected with a connecting pipe (101), and includes a pipe joint body (20) and a nut member (30). When the connecting pipe (101) formed with a bead (101a) expanded in the radial direction is connected with this pipe joint (10), a male thread (25) of the pipe joint body (20) is engaged with a female thread (33) of the nut member (30) to hold the bead (101a) between a tapered face (22) and a tapered face (34). In addition, the joined portion between the bead (101a) and the tapered face (22) forms a first sealed portion, and a joined portion between the bead (101a) and the tapered face (34) forms a second sealed portion. Still further, a tapered face (24) of the pipe joint body (20) is joined with the tapered face (34) of the nut member (30) to form a third sealed portion.