The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2020
Filed:
Feb. 22, 2018
Saipem S.a., Montigny le Bretonneux, FR;
SAIPEM S.A., Montigny le, FR;
Abstract
A process for lining a steel pipe for the subsea transport of fluids comprises machining of an annular cavity in an inner wall of the pipe to be lined. The cavity is set back longitudinally relative to an end of the pipe. The deposition by welding of a first resurfacing layer includes a corrosion-resistant metal alloy on the inside of the cavity. Surface machining of the first resurfacing layer is done to the internal diameter of the pipe. A liner made of corrosion-resistant steel alloy is introduced into the pipe. Deposition by welding includes at least one second resurfacing layer made of corrosion-resistant metal alloy on the inner wall of the pipe between the end of the liner in contact with the first machined resurfacing layer and the corresponding end of the pipe. Surface machining of the second resurfacing layer is done to the internal diameter of the pipe.