Pipes and tubular conduits – End protectors – Threaded
Patent
1995-11-16
1997-10-21
Brinson, Patrick
Pipes and tubular conduits
End protectors
Threaded
138143, 138DIG6, 285 55, 285 94, F16L 700
Patent
active
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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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.
Agip S.p.A.
Brinson Patrick
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