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Application filed by Tenaris Connections AgfiledCriticalTenaris Connections Ag
Priority to MYPI20051448priorityCriticalpatent/MY134454A/en
Publication of MY134454ApublicationCriticalpatent/MY134454A/en
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 μm AND 6,0 μm, WHICH IS COVERED BY A UNIFORM LAYER (7) OF A DRY CORROSION INHIBITING COATING AND A SECOND UNIFORM (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.(FIG 3)
MYPI200514482005-03-312005-03-31Threaded pipe with surface treatment
MY134454A
(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.