Title:
HYDROGEN GAS STEEL PIPE, METHOD FOR MANUFACTURING HYDROGEN GAS STEEL PIPE, HYDROGEN GAS PRESSURE VESSEL, AND METHOD FOR MANUFACTURING HYDROGEN GAS PRESSURE VESSEL
Document Type and Number:
WIPO Patent Application WO/2022/091846
Kind Code:
A1
Abstract:
Provided is a hydrogen gas steel pipe which has both excellent hydrogen embrittlement resistance and high productivity, and which can be extremely preferentially used as a member such as a hydrogen gas pressure vessel. This hydrogen gas steel pipe has an inner surface that has been subjected to finish polishing, wherein an inclination angle of a polishing seam, which is present on the inner surface, with respect to the circumferential direction of the hydrogen gas steel pipe is 0-30°.
Inventors:
MATSUBARA KAZUKI (JP)
OKANO HIROSHI (JP)
TAKAGI SHUSAKU (JP)
OKANO HIROSHI (JP)
TAKAGI SHUSAKU (JP)
Application Number:
PCT/JP2021/038462
Publication Date:
May 05, 2022
Filing Date:
October 18, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
F16L9/02; B24B5/06; B24B5/40; F16J12/00; F17C1/00
Foreign References:
| CN208468043U | 2019-02-05 | |||
| JP2019044890A | 2019-03-22 | |||
| JP2009299174A | 2009-12-24 | |||
| CN107435814A | 2017-12-05 | |||
| JP2016172909A | 2016-09-29 | |||
| JP2017048912A | 2017-03-09 | |||
| JPS5475461U | 1979-05-29 | |||
| JP2018053357A | 2018-04-05 | |||
| JP2009275249A | 2009-11-26 | |||
| JP2018012855A | 2018-01-25 |
Other References:
See also references of EP 4239234A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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