Interposing the destal of each pipe arrangement which possesses the pipe arrangement manner which uses the branching section equipped coupling one somatotype pipe arrangement material and the said branching section equipped coupling one somatotype pipe arrangement material and the pipe arrangement system null flexibiility which uses

摘要

PROBLEM TO BE SOLVED: To provide a branch pipe and a piping method using it which are used for a prefabricated method of construction of piping for a building, and which realize easy positioning of a branch part, easy connection and a small-diameter through hole of a floor without the need for obtaining large space for execution, and enable the execution to be performed without damaging or deforming the piping.;SOLUTION: The joint 1 with the branch pipe used for the prefabricated method of construction of the piping is provide with a joint part body 31, the branch part 32, and a main pipe part 2. The joint part body has an upper connection and a lower connection, each of which has the same axis, and a body. Then the branch part joints a branch pipe to the joint part body 31, and a main pipe of a given length of the main pipe part is connected to either the upper connection or the lower connection. Then the other connection of the connection to which the main pipe is connected is an electric fusion connection 18.;COPYRIGHT: (C)2006,JPO&NCIPI