[12] Patent
[11] Patent No.:GC0007681  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126688
Date of the Decision to Grant the Patent:30/Apr/2018

[21] Application No.:GC 2015-29069

[22] Filing Date:16/3/2015

[30] Priority:

[33] State [32] Priority date [31] Priority No.
JP
20/3/2014
2014-058702

[72] Inventor: Kunio Goto

[73] Owners:1- Nippon Steel & Sumitomo Metal Corporation, 6-1, Marunouchi 2-chome, Chiyoda-ku100-8071 , Tokyo , JapanŲŒ2- VALLOUREC OIL AND GAS FRANCE, 54 rue Anatole France, Aulnoye-Aymeries, F-59620, France

[74] Agent: Saud M. A. Shawwaf Law Office

  

 

  

[51]IPC:
Int. Cl.: C10M 169/04; F16L 15/04; C10M 107/02; C10M107/26, 109/00, 125/30, 147/00; C10N 40/00, 50/08 (2006.01)

[56] Cited Documents:

-JP 5124887 B1 (Nippon Steel & Sumitomo Metal Corp. et al.)
23 January 2013
-JP 2009512819 A (Vallourec Mannesmann Oil & Gas France et al.),
26 March 2009
-JP 2010523920 A (Vallourec Mannesmann Oil & Gas France)
15 July 2010
-JP 2013545940 A (Nippon Steel & Sumitomo Metal Corp. et al.),
26 December 2013
 
Examiner: Eng. Ebrahim AlQurashi

[54] COMPOSITION FOR SOLID LUBRICATING COATING, THREADED CONNECTION FOR PIPE OR TUBE INCLUDING THE SOLID LUBRICATING COATING FORMED FROM THE COMPOSITION, AND METHOD OF PRODUCING THE THREADED CONNECTION
[57] Abstract: This invention provides a threaded connection for pipe or tube that has a non-sticky surface and that suppresses the occurrence of rust and exhibits excellent galling resistance and airtightness even in an extremely low temperature environment without using compound grease, a method of producing the same, and a composition for forming a solid lubricating coating on the threaded connection. A solid lubricating coating (24) formed from a composition containing a binder, a fluorine addition agent, a solid lubricant and a rust proof addition agent is coated as a topmost surface treatment coating on a contact surface of at least one of a pin and a box. Even when exposed to an extremely low temperature environment, the solid lubricating coating (24) can maintain adhesiveness and exhibit a lubricating function, can suppress the occurrence of galling of a threaded connection, and can also secure airtightness after fastening.
No. of claims: 14     No. of figures: 8


 

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