BRANCH JOINT

摘要

PROBLEM TO BE SOLVED: To provide a branch joint capable of raising the jointing strength between a main pipe and a joint with no cracking on the main pipe for improved construction property. SOLUTION: A branch joint 1 comprises a first sleeve piece 2 comprising a branching part 23 to which a branch pipe is connected, and a second sleeve piece 3 which is fastened to the outer peripheral surface of a main pipe 10 consisting of an iron pipe along with the first sleeve piece 2. A steel grid 95 of amorphous particles comprising the material harder than the main pipe 10 is sandwiched between the second sleeve piece 3 and the main pipe 10. COPYRIGHT: (C)2005,JPO&NCIPI