Title:
METHOD AND SYSTEM FOR MANUFACTURING METAL-PLATED STEEL PIPE
Document Type and Number:
WIPO Patent Application WO/2011/024290
Kind Code:
A1
Abstract:
Disclosed are a system capable of adjusting a dipping time easily in a continuous steel pipe manufacturing line, and a manufacturing method.
The steel pipe manufacturing system manufactures a steel pipe which has been plated on the inner and outer faces or one face thereof with a molten metal, from a strip steel by the continuous manufacturing line. The steel pipe manufacturing system comprises an inner-face plating section for subjecting the upper side of the strip steel on the side, which is equivalent to the inner face of the steel pipe, to the molten-metal plating treatment by pouring the molten metal, a steel-pipe forming section for cold-forming the inner-face-plated strip steel continuously into a tubular shape and seam-welding the joined longitudinal end faces of the strip steel formed into the steel pipe, to thereby acquire a continuous steel pipe, and an outer-face plating section for plating the steel-pipe outer face with the molten metal by dipping same in the molten metal.
The steel pipe manufacturing system is characterized in that the molten-metal dipping length in the inner-face plated section and/or the outer-face plated section can be adjusted.
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Inventors:
NAKAMURA Shinichiro (NK Bldg. 6F, 2-8-12, Iwamoto-cho, Chiyoda-k, Tokyo 32, 〒1010032, JP)
中村 慎市郎 (〒32 東京都千代田区岩本町２丁目８番１２号 ＮＫビル６階 大和鋼管工業株式会社内 Tokyo, 〒1010032, JP)
中村 慎市郎 (〒32 東京都千代田区岩本町２丁目８番１２号 ＮＫビル６階 大和鋼管工業株式会社内 Tokyo, 〒1010032, JP)
Application Number:
JP2009/065062
Publication Date:
March 03, 2011
Filing Date:
August 28, 2009
Export Citation:
Assignee:
Daiwa Steel Tube Industries Co., Ltd. (NK Bldg. 6F, 2-8-12 Iwamoto-cho, Chiyoda-k, Tokyo 32, 〒1010032, JP)
大和鋼管工業株式会社 (〒32 東京都千代田区岩本町２丁目８番１２号 ＮＫビル６階 Tokyo, 〒1010032, JP)
NAKAMURA Shinichiro (NK Bldg. 6F, 2-8-12, Iwamoto-cho, Chiyoda-k, Tokyo 32, 〒1010032, JP)
大和鋼管工業株式会社 (〒32 東京都千代田区岩本町２丁目８番１２号 ＮＫビル６階 Tokyo, 〒1010032, JP)
NAKAMURA Shinichiro (NK Bldg. 6F, 2-8-12, Iwamoto-cho, Chiyoda-k, Tokyo 32, 〒1010032, JP)
International Classes:
C23C2/38; B21C37/08; B21C37/09; B23K11/087; C23C2/02; C23C2/18; C23C2/20; C23C2/26
Attorney, Agent or Firm:
ITOH Atsushi (Horidome First Bldg. 8F, 1-11-10 Nihonbashi Horidome-cho, Chuo-k, Tokyo 12, 〒1030012, JP)
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