PURPOSE: To prevent fluid from leaking from the coupling section of a fitting by making a hard resin section on the external peripheral side, a soft resin section on the internal peripheral section, the reverse pawl rings buried in the resin sections, and pawls 22 preventing a pipe from coming out be protruded state in the radial direction and in the direction to which a pipe is inserted and circumferencially arranging them parallel with each other.

CONSTITUTION: A fitting 1 comprises a hard resin section 3 on the external peripheral section side, a soft resin section 4 on the internal peripheral section side, which seals the external periphery of a pipe 2, and the reverse pawl rings 5 buried these resin sections 3 and 4. On the internal peripheral section of the reverse pawl rings 5, pawls 22 for preventing the pipe 2 from coming out by biting at the pipe 2 are arranged parallel in the peripheral direction. The fitting 1 is molded in such a way that with a core mold 26 inserted in the cavity of the first cavity mold the soft resin section 4 is formed by an injection mold ing method, and then the core mold 26 is drawn out, and with the soft resin section 4 inserted in the cavity of the second cavity mold 28 the hard resin section 3 is formed by an injection molding method. As a result, fluid leakage and coming out of the pipe are prevented.