Patent ID: 6799608
Filing Date: 2004-10-05
Classification: F16L

Abstract:
A bent pipe having a pipe body consisting of an outer bent portion and an inner bent portion, comprisinga) an inlet hole provided on one end of the pipe body, b) an outlet hole provided on the other end of the pipe body, c) an inner surface extending to communicate the inlet hole with the outlet hole, and d) an abrasion resistance layer formed on the inner surface of at least the outer bent portion of the pipe body, wherein the pipe body is cut along a curved face that is perpendicular to a plane including a central axis of the pipe body and that extends not to cross the inlet hole and the outlet hole but to include a part of the central axis, to thereby be divided into a first partitioned part having at least one of the groups of the inlet hole and the outlet hole, and a second partitioned part, and wherein a self fluxing alloy is sprayed by thermal spraying and fused on the inner surface of the pipe body to form an abrasion resistance layer followed by that the first partitioned part is fitted into the second partitioned part for welding.