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Application filed by Tenaris Connections AgfiledCriticalTenaris Connections Ag
Priority to CU20050074ApriorityCriticalpatent/CU23285A3/en
Publication of CU23285A3publicationCriticalpatent/CU23285A3/en
Non-Disconnectible Joints And Screw-Threaded Joints
(AREA)
Abstract
Un caÅ"o metálico roscado para la industria de extracción de petróleo tiene una porción roscada en su extremo con tratamiento superficial, en el cual la superficie del metal tiene una rugosidad (Ra) comprendida entre 2,0um y 6,0um, y la cual está recubierta por una capa uniforme (7) de un recubrimiento inhibidor de corrosión seco y una segunda capa uniforme (8) de un recubrimiento lubricante seco. En forma alternativa, las capas (8,9) se combinan en una capa uniforme (9) de un recubrimiento inhibidor de corrosión seco que contiene una dispersión de partÃculas de lubricante sólido. </P>A threaded pipe or metal for the oil extraction industry has a threaded portion at its end with surface treatment, in which the metal surface has a roughness (Ra) between 2.0um and 6.0um, and which is covered by a uniform layer (7) of a dry corrosion inhibitor coating and a second uniform layer (8) of a dry lubricant coating Alternatively, the layers (8,9) are combined into a uniform layer (9) of a dry corrosion inhibitor coating containing a dispersion of solid lubricant particles. </P>
CU20050074A2005-04-072005-04-07
CAÅ OR THREADED WITH SURFACE TREATMENT
CU23285A3
(en)
Dispersion of surface modified inorganic particles comprising: liquid and surface modified inorganic particles comprising polyvalent metal ions and with a particle diameter less than 10 microns; method for manufacturing said dispersion.
COMPOSITION FOR SOLID LUBRICANT COATING, THREADED CONNECTION FOR PIPE OR PIPE INCLUDING SOLID LUBRICANT COATING FORMED FROM THE COMPOSITION, AND METHOD FOR PRODUCING THREADED CONNECTION
COMPOSITION THAT INCLUDES COMPOUNDS OF Unsaturated SILANOS AND A SYSTEM OF 2 PEROXIDES THAT CONSISTS OF 1st AND 2nd PEROXIDES WITH 1st AND 2nd TEMPERATURES FOR AVERAGE LIFE OF 0.1 HOUR, WHERE THE DIFFERENCE BETWEEN SUCH TEMPERATURES IS> 5 DEGREES CELSIUS; POLYMER
Nozzle lining paper for a filter cigarette, in regions of surfaces to be glued, is provided, on the side that comes into contact with adhesive, of a three-dimensional surface structure, that is, of a surface that has protrusions and / or depressions , protruding these highlights from the surface of the film or being these depressions retracted with respect to it only locally, where the paper is a film.