Anti-seizure protection for joints, particularly suitable for th

Pipes and tubular conduits – End protectors – Threaded

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138143, 138DIG6, 285 55, 285 94, F16L 700

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056786085

ABSTRACT:
An anti-seizure protection for a threaded joint or sleeve, particularly suitable for the petroleum sector, comprises a first film layer of a copper-zinc alloy anchored to the threads of the joint and a second film layer of lead anchored to the first layer. The anchoring is preferably achieved by ionic deposition.

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Database WPI 8623, Derwent Publications Ltd., London, great Britain, AN 86-146450 & JP-A-61 079 798, (Sumoto Metal Ind KK) 23 Apr. 1986.
Patent Abstracts of Japan, vol. 006, No. 224 (M-170) 9 Nov. 1982 & JP-A-57 107 593, (Sumitomo Kizoku Kouzan KK), 7 Aug. 1982, "Brazing Alloy For Adhering Of Ferrite," Kuwano Akira.

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