DUPLICATION WALL PIPE HAVING A STEP REMOVING RING FOR GUARANTEEING HIGH WATER TIGHTNESS BY ADHERING CLOSELY A RUBBER RING FOR PIPE CONNECTION TO THE INNER WALL OF A CONNECTION PIPE AND AN INSERTION PIPE

摘要

PURPOSE: A duplication wall pipe having a step removing ring is provided to maintain water tightness even when the connection part of a pipe is folded by soil pressure.;CONSTITUTION: A socket portion(13) is formed by expanding the end part of a connection pipe. A step removing rubber ring(100) is comprised of a protruded portion(101) and wing portions(102). The protruded portion is inserted into the inner side of the socket portion. The protruded portion adheres closely to the end part of an insertion pipe(11) and the inner wall of the socket portion. The wing portions are formed in both sides of the protruded portion. The wing portions adhere closely to the inner wall of the insertion pipe and a connection pipe.;COPYRIGHT KIPO 2010