To provide a pipe fitting superior in accuracy and work efficiency, and fixable to a predetermined position of a wall surface.

This pipe fitting has an inserting pipe part inserted into a wall through-hole arranged in a wall, and a plurality of fixing arms radially extending from an outer peripheral surface of the inserting pipe part, and is characterized in that the fixing arms have a fixing surface abutting on a peripheral wall surface of the wall through-hole on the inserting pipe part inserting side and coincident with a pipe axis orthogonal surface of the inserting pipe part, and a fixture inserting hole to a wall surface, in a state of inserting the inserting pipe part into the wall through-hole.