CORROSION PROOF STRUCTURE OF BRANCH PORT FOR FLUID TUBE AND CORROSION PROOF METHOD OF BRANCH PORT

摘要

PROBLEM TO BE SOLVED: To surely and expansively deform the tip part of a bush into a prescribed shape while realizing the facilitation of work management and reduction of construction costs by making the projecting margin of the bush to the inside of a fluid tube almost constant even if the bushes having the same insertion length are used under a condition that the actual thickness is different according to kinds of the fluid tubes.;SOLUTION: An insertion regulating part 13, which is brought into contact with at least a part of the opening peripheral edge on the outer peripheral face side of the branch port 5 is provided to the bush 6 to be inserted from the outside in the direction of the branch axis Y to the branch port 5 to be penetratingly formed to the fluid tube 1. And at the same time, a gap adjusting member 11, which changes the insertion length of the bush 6 according to the actual thickness of the fluid tube 1, is provided freely detachably/attachably between the insertion regulating part 13 of the bush 6 and the opening peripheral edge on the outer peripheral face side of the branch port 5.;COPYRIGHT: (C)2004,JPO