Title:
PIPE HAVING HEAT-RESISTANT CORROSION-RESISTANT PLATING LAYER THAT HAS EXCELLENT PROCESSABILITY
Document Type and Number:
WIPO Patent Application WO/2014/007139
Kind Code:
A1
Abstract:
[Problem] To provide a pipe which has a heat-resistant corrosion-resistant multi-ply plating layer having excellent processability.
[Solution] A pipe which is characterized by comprising a multi-ply plating layer that is composed of: a ZnNi alloy plating layer that is formed as a first layer on the surface of a base steel pipe so as to have an Ni content of 5-9% and a thickness of 3-9 μm; a ZnNi alloy plating layer that is bonded as a second layer onto the first ZnNi alloy plating layer so as to have an Ni content of 10-15% and a thickness of 1-3 μm; and a chromate coating film that is formed on the second ZnNi alloy plating layer.
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Inventors:
ISHII YASUSHIGE (JP)
Application Number:
PCT/JP2013/067670
Publication Date:
January 09, 2014
Filing Date:
June 27, 2013
Export Citation:
Assignee:
USUI KOKUSAI SANGYO KK (JP)
International Classes:
C25D5/26; C23C28/00; C25D7/04
Foreign References:
JPH08188884A | 1996-07-23 | |||
JPH042783A | 1992-01-07 | |||
JPH02120034A | 1990-05-08 | |||
JPH10121267A | 1998-05-12 | |||
JPH08134685A | 1996-05-28 |
Other References:
See also references of EP 2871263A4
Attorney, Agent or Firm:
OSHIDA Yoshitaka (JP)
Yoshitaka Oshida (JP)
Yoshitaka Oshida (JP)
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