To provide a flanged polyethylene resin short pipe for solving a disadvantage that a fluid easily flows out of a flange connection between the polyethylene resin pipe and a dissimilar pipe, and preventing leakage of the fluid even when the flange connection is slightly loosened.

In the flanged polyethylene resin short pipe with a flange integrated with an end thereof, a seal ring fitting groove is provided on a flange end face, the thickness t1 of a bottom surface of the seal ring fitting groove of the flange is not less than the resin short pipe outside diameter D/11, the differential dimension t2 between the outer circumference of the flange and the outer circumference of the seal ring fitting groove is not less than the flange outside diameter D1/11, and an outer circumferential corner portion of the flange end face of the seal ring fitting groove and an inner circumferential corner portion of the bottom part of the seal ring fitting groove are chamfered.