Title:
GUARD RAIL BEAM
Document Type and Number:
WIPO Patent Application WO/2024/004312
Kind Code:
A1
Abstract:
Provided is a guard rail beam characterized by being constituted from a plated steel material comprising a steel material and a plating layer that is formed on both surfaces of the steel material and that comprises Zn-based plating, at least one edge surface of the steel material being covered by the plating layer, and the relationships 0.60 × tc ≤ te < tc, We ≥ Wc, and Wt ≥ Wc being satisfied (where tc is the average plate thickness (mm) of the steel material at positions at least 10 mm inward from the edge surface covered by the plating layer, te is the average plate thickness (mm) of the steel material at positions 1-10 mm from the edge surface covered by the plating layer, We is the average thickness (μm) of the plating layer per surface at positions 1-10 mm from the edge surface covered by the plating layer, Wc is the average thickness (μm) of the plating layer per surface at positions at least 10 mm inward from the edge surface covered by the plating layer, and Wt is the average thickness (μm) of the plating layer on the edge surface covered by the plating layer).
Inventors:
UENO SHIN (JP)
SHOJI HIROMASA (JP)
KOBAYASHI AKINOBU (JP)
YAMASHITA SATORU (JP)
SHOJI HIROMASA (JP)
KOBAYASHI AKINOBU (JP)
YAMASHITA SATORU (JP)
Application Number:
PCT/JP2023/014253
Publication Date:
January 04, 2024
Filing Date:
April 06, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C2/06; C22C18/04; E01F15/04
Foreign References:
| JP2005120461A | 2005-05-12 | |||
| JP2017209727A | 2017-11-30 | |||
| CN101831600A | 2010-09-15 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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