Threaded pipe with surface treatment

Details Threaded pipe with surface treatment Threaded pipe with surface treatment

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 58/18 (2006.01) F16L 15/00 (2006.01)

Patent

CA 2500416

A threaded metallic pipe for oil extraction industry has a threaded end portion with treated surface in which the metal surface has a roughness (Ra) comprised of 2,0 ~m and 6,0 ~m, which is covered by a uniform layer (7) of a dry corrosion inhibiting coating and a second uniform layer (8) of dry lubricant coating. Alternatively the layers (8, 9) combined into one uniform layer (9) of a dry corrosion inhibiting coating containing a dispersion of particles of solid lubricant.

Ce conduit métallique fileté, destiné à l'industrie de l'extraction pétrolière, a une extrémité filetée ayant reçu un traitement de surface, la rugosité du métal en surface étant comprise entre 2,0 et 6,0 ?m. Ce traitement de surface est recouvert d'une première couche uniforme (7) d'un revêtement empêchant la corrosion sèche ainsi que d'une seconde couche uniforme (8) d'un revêtement lubrifiant sec. Dans une variante, les deux couches (8, 9) sont combinées en une seule couche uniforme de revêtement empêchant la corrosion sèche et contenant une dispersion de particules de lubrifiant solide.

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