Threaded joint for pipes
BNRE20180004BUndetermined Publication Date: 2008-12-02VALLOUREC MANNESMANN OIL & GAS FRANCE +1
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Patent Information
- Application Number
- BNRE20180004
- Authority / Receiving Office
- BN · BN
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2008-10-17
- Filing Date
- 2008-12-02
- Publication Date
- 2008-12-02
- Estimated Expiration
- 2028-12-02
Abstract
IN A THREADED JOINT FOR PIPES CONSTITUTED BY A PIN (1) AND A BOX (2), EACH HAVING A CONTACT SURFACE COMPRISING A THREADED PORTION (3A,3B) AND AN UNTHREADED METAL CONTACT PORTION, THE CONTACT SURFACE OF THE PIN (1) HAS A SOLID CORROSION PROTECTIVE, PREFERABLY TRANSPARENT COATING BASED ON A UV-CURABLE RESIN AND THE CONTACT SURFACE OF THE BOX HAS A SOLID LUBRICATING COATING (33) HAVING PLASTIC OR VISCOPLASTIC THEOLOGICAL BEHAVIOR WHICH IS PREFERABLY FORMED BY THE HOT MELT TECHNIQUE FROM A COMPOSITION COMPRISING A THERMOPLASTIC POLYMER, A WAX, A METAL SOAP, A CORROSION INHIBITOR, A WATER-INSOLUBLE LIQUID RESIN, AND A SOLID LUBRICANT. FIG. 3
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