Title:
STEEL PLATE FOR PRODUCING PIPE HIGHLY RESISTANT TO FUEL VAPOR CORROSION, PIPE USING SAME AND METHOD FOR PRODUCING PIPE
Document Type and Number:
WIPO Patent Application WO/2012/017674
Kind Code:
A1
Abstract:
[Problem] To provide a pipe which is highly resistant to corrosion by the vapor of a fuel such as gasoline, gas oil, bioethanol or a biodiesel fuel, a method for producing a pipe, and a steel plate for producing a pipe. [Solution] A method for producing a pipe having a bend section which is highly resistant to corrosion by a fuel vapor, said method comprising: a step for preparing a steel plate for producing a pipe which is characterized by being provided, at least on one surface, with a zinc-nickel (Zn-Ni) alloy layer having a nickel content of 4-16 at%; a step for shaping the steel plate for producing a pipe into a tube having the Zn-Ni alloy layer as the inner face; and a step for bending the pipe in such a manner that the elongation at a convex bending part formed by the bending is not more than 20%. A steel plate for producing a pipe which is highly resistant to corrosion by a fuel vapor, said pipe being provided with a Zn-Ni alloy layer at least as the uppermost layer of the face which serves as the inner face of the pipe, and the nickel content of the Zn-Ni alloy layer being 4-16 at%.
Inventors:
TOMOMORI TATSUO (JP)
YOSHIOKA KOH (JP)
YOSHIOKA KOH (JP)
Application Number:
PCT/JP2011/004447
Publication Date:
February 09, 2012
Filing Date:
August 04, 2011
Export Citation:
Assignee:
TOYO KOHAN CO LTD (JP)
TOMOMORI TATSUO (JP)
YOSHIOKA KOH (JP)
TOMOMORI TATSUO (JP)
YOSHIOKA KOH (JP)
International Classes:
B21D51/16; B21C37/06; B21D5/10; C25D5/26; F02M37/00
Foreign References:
| JPH09324282A | 1997-12-16 | |||
| JP2009113066A | 2009-05-28 | |||
| JPH059786A | 1993-01-19 | |||
| JP2002242779A | 2002-08-28 |
Attorney, Agent or Firm:
OHTA PATENT OFFICE (JP)
Patent business corporation Ota patent firm (JP)
Patent business corporation Ota patent firm (JP)
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Claims: