FIELD: construction.
SUBSTANCE: method for threaded pipe joints sealing comprises preparation of the threaded joint surface to form a porous adhesion-corrosion resistant layer on the metal, application of polymer coating with addition of gamma aminosilane and filling of the threaded area with encapsulating material based on graphite composition and tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) copolymer, a corrosion inhibitor, a film of which prevents corrosion processes under the film in subsequent operations, is applied prior to polymer coating application to the threaded surface.
EFFECT: invention increases the seal quality and threaded connections sealing due to application of the proposed sealing composition, and thereby enhances the reliability and stability of threaded pipe joints coatings.
4 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SEALING METHOD OF THREADED CONNECTIONS OF PIPES | 2014 |
|
RU2543107C1 |
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|
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| FLUOROPLASTIC PORE-FORMING COMPOSITION AND METHOD OF PRODUCING FLUOROPLASTIC PORE-FORMING COMPOSITION | 2014 |
|
RU2554886C1 |
| 0 |
|
SU559936A1 |
