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Title:
STEEL PIPE
Document Type and Number:
WIPO Patent Application WO/2019/087649
Kind Code:
A1
Abstract:
A steel pipe (10) that comprises: a tubular steel layer (11); an alloy layer (14) that has a ζ layer (14b) and covers an outer surface of the steel layer (11); and a zinc layer (15) that covers the alloy layer (14). The zinc layer (15) is thinner than the alloy layer (14).

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Inventors:
KISHIDA TAKASHI
SANAGAWA YOSHIHARU
Application Number:
PCT/JP2018/036735
Publication Date:
May 09, 2019
Filing Date:
October 01, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F16L58/08; C23C2/06; C23C2/28; C23C2/38; F16L9/02; B21C37/30
Foreign References:
JP2009280880A2009-12-03
JP2013100587A2013-05-23
JP2013227594A2013-11-07
EP1433869A12004-06-30
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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