Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
THREADED JOINT FOR PIPE AND METHOD FOR PRODUCING THREADED JOINT FOR PIPE
Document Type and Number:
WIPO Patent Application WO/2018/216497
Kind Code:
A1
Abstract:
The present invention provides a threaded joint for pipes that has excellent misalignment resistance, high torque-on-shoulder resistance, and excellent corrosion resistance, and a method for producing the same. This threaded joint for pipes comprises a pin (13) and a box (14). The pin (13) and the box (14) each have a threaded part (15, 20) and a contact surface (130, 140) including a non-threaded metal contact part. The threaded joint for pipes comprises, on the contact surface (130, 140) of the pin (13) and/or the box (14), a surface roughness, a Zn-Ni alloy plating layer (21), a Cu-Sn-Zn alloy plating layer (22), and a solid lubricating film layer (23). These are layered in the order of the surface roughness, the Zn-Ni alloy plating layer (21), the Cu-Sn-Zn alloy plating layer (22), and the solid lubricating film layer (23) from the contact surface (130, 140) side.

Inventors:
GOTO, Kunio (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2018/018221
Publication Date:
November 29, 2018
Filing Date:
May 10, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
VALLOUREC OIL AND GAS FRANCE (54 rue Anatole France, AULNOYE-AYMERIES, 59620, FR)
International Classes:
F16L15/04; C10M107/38; C10M145/18; C10M149/16; C23C28/00; C25D5/10; C25D5/26; C25D5/36; C25D7/04; F16L15/00; F16L58/08; C10N20/00; C10N30/00; C10N30/06; C10N30/12; C10N40/00
Domestic Patent References:
WO2017047722A12017-03-23
WO2014042144A12014-03-20
Foreign References:
JP2015506445A2015-03-02
JPS5817285A1983-02-01
JP2013087829A2013-05-13
JP2008069883A2008-03-27
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (5-17, Dojima 1-chome Kita-ku, Osaka-sh, Osaka 03, 〒5300003, JP)
Download PDF: