To provide a resin pipe joint improved to be excellent in assembly work efficiency and handling properties to confirm that tightening of a union nut is ended or almost ended even in a noisy work site.
In the resin pipe joint, the union nut 2 advances by screwing a male screw 5 into a female screw 8 in a state that a tube 3 is externally fitted to an inner cylinder 4 to form a diameter-enlarged part 3A, and a diameter-enlarged change region 9 is pressed by a pressing part 10 for sealing. A ring body 18 is externally fitted to a joint body 1 rotatably between an outer peripheral flange 1A and a union nut end surface 2a in an axis P direction, a co-rotation means D co-rotating the ring body 18 by the rotated union nut 2 is provided, and a tightening end recognition means C is provided so that the ring body 18 is started to be co-rotated when the union nut 2 is in the advancing end state that the pressing part 10 for sealing presses the diameter-enlarged change region 9 and a seal part S is formed.
YAMADA MASATERU
TEJIMA KAZUKIYO
NAKAMURA TAKEHIRO
KISHIMOTO TAKAYUKI
MASUDA AKIHIRO
NAKAGAWA TAKESHI
