FIELD: chemistry.
SUBSTANCE: lubricating film-forming composition comprising: from 40 to 80% by weight of base oil, consisting of one or more substances, selected from pentaerythritol ester, fatty acid, trimethylolpropane ester and fatty acid; from 5 to 20% by weight of a solidifying substance, consisting of paraffin wax; and from 10 to 40% by weight of a solid lubricant, consisting of one or more substances, selected from alkali metal salt and hydroxystearic acid; and salts of alkaline earth metal and hydroxystearic acid. The total content of the base oil, solidifying agent and solid lubricant is 85 wt % or more and 100 wt % or less, and the lubricating film-forming composition does not contain heavy metals. A threaded joint for steel pipes, including a nipple and a coupling, is also provided, wherein said threaded joint is provided with a lubricating film that is formed from a lubricating film-forming composition on the surface of the fitting part.
EFFECT: improved properties.
4 cl, 5 dwg, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| LUBRICANT COATING COMPOSITION SUITABLE FOR USE IN THREADED JOINTS OF PIPES | 2007 |
|
RU2418041C2 |
| THREADED CONNECTION FOR STEEL PIPES | 2006 |
|
RU2360174C1 |
| PIPE THREADED JOINT AND FORMING LUBRICATING COATING COMPOSITION FOR USE THEREIN | 2013 |
|
RU2604526C2 |
| THREADED CONNECTION | 2003 |
|
RU2281429C2 |
| LUBRICATING COMPOSITION FOR LUBRICATION OF THREADED CONNECTION | 2001 |
|
RU2246532C1 |
| THREADED JOINT FOR PIPES | 2010 |
|
RU2474742C1 |
| THREADED JOINT FOR PIPES OR TUBES AND METHOD OF MAKING THREADED JOINT FOR PIPES OR TUBES | 2018 |
|
RU2729482C1 |
| THREADED TUBULAR COMPONENT PROTECTED BY FILM | 2014 |
|
RU2664930C2 |
| THREADED CONNECTION FOR PIPES OF OIL-FIELD GRADE AND COMPOSITION FOR PHOTO-CURED COATING | 2015 |
|
RU2647282C1 |
| THREADED PIPE JOINT | 2006 |
|
RU2364781C1 |
