Title:
METHOD FOR MANUFACTURING STEEL TUBE EXCELLENT IN FORMABILITY AND WORKABILITY
Document Type and Number:
Japanese Patent JP2003200205
Kind Code:
A
Abstract:
To provide a manufacturing method of a steel tube excellent in hydroforming formability and bending formability and tube-drawing workability when working parts.
In this manufacturing method of the steel tube excellent in formability and workability, rolling is performed at the diameter reduction rate of ≥25% in a hot stretch reduction and by imparting tension between rolling mills so as to decrease thickness.
Inventors:
ASAHI HITOSHI
SHINOHARA YASUHIRO
YOSHINAGA NAOKI
FUJITA NOBUHIRO
SHINOHARA YASUHIRO
YOSHINAGA NAOKI
FUJITA NOBUHIRO
Application Number:
JP2001397802A
Publication Date:
July 15, 2003
Filing Date:
December 27, 2001
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B3/00; B21B17/14; C21D8/10; (IPC1-7): B21B17/14; C21D8/10
Attorney, Agent or Firm:
Takashi Ishida (3 others)
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