Patent ID: 11441716

Abstract:
A resin pipe joint (1, 11) includes a tubular joint body portion (2, 12) defining an internal flow path (P) the internal flow path being configured to allow a fluid to flow therein; and two or more welding end portions (3-3c, 13a, 13b) respectively provided at two or more opening portions (A1-A3) of the internal flow path (P), each of the welding end portions being configured to be welded to an abutting welding end portion of other resin piping member, wherein the internal flow path (P) comprises: one of a branched point (Bp) that branches the internal flow path (P) into two or more portions; a curved point (Cp) that bends the internal flow path (P); and an internal diameter transition point (Tp) that changes an internal diameter of the internal flow path, in mid-way of the internal flow path, and wherein a length (Lh) from the branched point (Bp), the curved point (Cp) or the inner diameter transition point (Tp) to an end face of the welding end portion (3-3c, 13a, 13b) is shorter than half of a straight distance (SD, SD1-SD4) between two points adjacent to each other, the two points being selected from the group consisting of branched points (Bp), curved points (Cp) and inner diameter transition points (Tp) of piping to be formed using the resin pipe joints (1, 11).