Multiple-wall pipe structure with anticorrosion end protection

Details Multiple-wall pipe structure with anticorrosion end protection Multiple-wall pipe structure with anticorrosion end protection

F - Mech Eng,Light,Heat,Weapons

16

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189/23, 189/4

F16L 3/22 (2006.01) B23K 9/028 (2006.01) F16L 9/18 (2006.01) F16L 58/18 (2006.01)

Patent

CA 1183466

ABSTRACT OF THE DISCLOSURE A multiple-wall pipe structure having at least two pipes tightly fitted one within another, one of which is of a corrosion-resistant material whereas the other is of a noncorrosion-resistant material. In order to protect against corrosion the end faces of the noncorrosion-resistant pipe and the seams between the two pipes, either during storage in the form of discrete pipe sections or in use by being welded or otherwise jointed end to end, a pair of anticorrosion rings of a corrosion-resistant material are integral- ly attached to the opposite ends of the fitted pipes so as to cover at least the end faces of the noncorrosion- resistant pipe and to seal the seams therebetween.

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