STEEL SHEET USED TO MANUFACTURE PIPE AND HAVING CORROSION-RESISTANT PROPERTIES AGAINST FUEL VAPORS, AND PIPE AND FUEL SUPPLY PIPE THAT USE SAME

Title:

STEEL SHEET USED TO MANUFACTURE PIPE AND HAVING CORROSION-RESISTANT PROPERTIES AGAINST FUEL VAPORS, AND PIPE AND FUEL SUPPLY PIPE THAT USE SAME

Document Type and Number:

WIPO Patent Application WO/2011/033774

Kind Code:

A1

Abstract:

Provided are: a steel sheet used to manufacture a pipe; a pipe; and a fuel supply pipe. The steel sheet, the pipe, and the fuel supply pipe have corrosion-resistant properties against fuel vapors, such as those of gasoline, light oil, bioethanol, and biodiesel fuel. A steel sheet used to manufacture a pipe, the steel sheet being provided on the surface thereof with an Fe-Ni diffusion layer and also with a softened Ni layer provided on the Fe-Ni diffusion layer, the Ni layer having a Ni coating thickness in the range of 0.9 - 8.1 μm, the steel sheet having corrosion-resistant properties against fuel vapors. A pipe and a fuel supply pipe, the pipes being constructed from a steel sheet and provided on the inner surfaces thereof with an Fe-Ni diffusion layer and also with a softened Ni layer provided on the Fe-Ni diffusion layer, the Ni layer having a Ni coating thickness in the range of 0.9 - 8.1 μm. A fuel supply pipe (20) for supplying fuel to a fuel tank (23), the fuel supply pipe (20) being provided with a large-diameter pipe section (21) through which the fuel passes and also with a small-diameter pipe section (22) which allows ventilation between the upper portion and the lower portion of the large-diameter pipe section. At least the inner surface of the small-diameter pipe section is provided with an Fe-Ni diffusion layer and also with a softened Ni layer provided on the Fe-Ni diffusion layer, and the Ni coating thickness of the Ni layer is in the range of 0.9 - 8.1 μm.

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Inventors:

TOMOMORI TATSUO (JP)
YOSHIOKA KOH (JP)
MINAGI HIDEYUKI (JP)

Application Number:

PCT/JP2010/005645

Publication Date:

March 24, 2011

Filing Date:

September 16, 2010

Export Citation:

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Assignee:

TOYO KOHAN CO LTD (JP)
TOMOMORI TATSUO (JP)
YOSHIOKA KOH (JP)
MINAGI HIDEYUKI (JP)

International Classes:

C25D5/50; F16L9/16; F16L58/08

Foreign References:

JPH062104A	1994-01-11
JPS61235594A	1986-10-20
JPH11117826A	1999-04-27
JP2002061552A	2002-02-28
JP2002371933A	2002-12-26

Other References:

See also references of EP 2479317A4
None

Attorney, Agent or Firm:

OHTA PATENT OFFICE (JP)
Patent business corporation Ota patent firm (JP)

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