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COATED STEEL PRODUCT 发明申请

2023-04-03 2140 96K 0

专利信息

申请日期 2025-07-10 申请号 JP2009120337
公开(公告)号 JP2010265541A 公开(公告)日 2010-11-25
公开国别 JP 申请人省市代码 全国
申请人 NIPPON STEEL CORP
简介 PROBLEM TO BE SOLVED : To provide a coated steel product which presents excellent anti-corrosion properties when it is used with its part embedded in concrete or ground. SOLUTION : The coated steel product is obtained by successively laminating a coating pretreatment film and at least one layer of coating film on the surface of a steel product having a galvanizing layer. The coating pretreatment film is a film having a composition different from that of the coating pretreatment film in a part of the steel product, or is lacked in a part of the steel product, and, the coating film includes a phosphoric acid based rust preventive pigment and a rust preventive pigment composed of the sulfate of an alkaline-earth metal(s). COPYRIGHT : (C)2011, JPO&INPIT


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