THREADED JOINT FOR PIPE AND METHOD FOR PRODUCING THREADED JOINT FOR PIPE

Title:

THREADED JOINT FOR PIPE AND METHOD FOR PRODUCING THREADED JOINT FOR PIPE

Document Type and Number:

WIPO Patent Application WO/2018/216416

Kind Code:

A1

Abstract:

Provided are a threaded joint for pipes that has excellent over-torque performance, and a method for producing the same. A threaded joint (1) for pipes according to the present embodiment comprises a pin (5) and a box (8). The pin (5) and the box (8) each have a threaded part (4, 7) and a contact surface (6, 9) including a non-threaded metal contact part. The threaded joint (1) for pipes comprises, on the contact surface (6, 9) of the pin (5) and/or the box (8), a solid lubricating film layer (21) including a resin, a solid lubricating powder, and Cr2O3.

Inventors:

GOTO KUNIO (JP)

Application Number:

PCT/JP2018/016582

Publication Date:

November 29, 2018

Filing Date:

April 24, 2018

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)
VALLOUREC OIL & GAS FRANCE (FR)

International Classes:

F16L15/04; C10M103/02; C10M107/38; C10M125/10; C10M145/04; C10M145/20; C10M149/18; C23C28/00; F16L15/00; C10N10/12; C10N30/00; C10N40/00; C10N50/02

Domestic Patent References:

WO2017047722A1	2017-03-23
WO2016098336A1	2016-06-23
WO2014042144A1	2014-03-20

Foreign References:

JP2015506445A	2015-03-02
JP2008013560A	2008-01-24
JP2017047418A	2017-03-09
JP2016130311A	2016-07-21
JP2013108556A	2013-06-06

Other References: