Title:
表面処理をしたネジ山付きのパイプ
Document Type and Number:
Japanese Patent JP4452622
Kind Code:
B2
Abstract:
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 mum and 6.0 mum, which is covered by a uniform layer ( 7 ) of a dry corrosion inhibiting coating and a second uniform layer ( 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.
Inventors:
Del Elba, Diego
Gabriel Yi, Carcanillo
Gabriel Yi, Carcanillo
Application Number:
JP2004542486A
Publication Date:
April 21, 2010
Filing Date:
October 10, 2003
Export Citation:
Assignee:
Tenaris Connections Actien Gezershyaft
International Classes:
B32B1/08; F16L15/04; B32B3/06; B32B15/092; F16L15/00; F16L58/18
Domestic Patent References:
| JP61136087A | ||||
| JP972467A |
Foreign References:
| WO1996010710A1 |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office