FLANGE FOR COUPLING PIPE

摘要

PURPOSE: A flange for coupling pipes is provided to improve the axial fixing force of a pipe and the flange by increasing the contact area of a bead and a bead placing part. CONSTITUTION: A flange(100) for coupling pipes comprises an insertion hole(10) and a bead placing part(20). The bead placing part is formed on the periphery of the insertion hole. A bead(50) formed on a pipe(90) is fixed to the bead placing part. The contact surface of the bead and the bead placing part is curved at a predetermined height difference in the longitudinal direction of the pipe.