While possessing the straight tube and the flare destal on one end side of the insulating spacer null stainless steel metal tubing of the stainless steel metal tubing

摘要

PROBLEM TO BE SOLVED: To enhance attaching work efficiency compared with that in a prior art, to prevent a compression change of an insulating spacer caused by tightening a box nut in piping execution, to surely prevent damage by the deterioration of the compression of the insulating spacer or the like, and to enhance an yield of a product.;SOLUTION: The insulating spacer 6 attached to a straight pipe of a stainless steel pipe has a cylindrical part is formed with a diameter-expanded flange 6b at an end of the cylindrical part 6a is has a cut-in part in a stripe form over a longitudinal direction of the cylindrical part 6a and the flange 6b, and constituted to be developed into a half-cut state via the cut-in part, a wall thickness T of the cylindrical part 6a and a wall thickness t of the flange 6b are set to satisfy a relation of (the wall thickness T of the cylindrical part 6a)≥(the wall thickness t of the flange 6b), and the electric corrosion between the stainless steel pipe and the box nut is inhibited by the attached insulating spacer 6.;COPYRIGHT: (C)2010,JPO&INPIT