Title:
鋼管及び該鋼管で形成されるパイプライン、鋼管杭、鋼管矢板
Document Type and Number:
Japanese Patent JP5382250
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a steel pipe used for forming a structure by executing circumferential butt welding, and capable of forming the structure excellent in buckling performance, and to provide a pipeline, a steel pipe pile and a steel pipe sheet pile formed of the steel pipe.SOLUTION: A steel pipe 1 is the steel pipe used for forming a structure by executing circumferential butt welding, and a range of at least 2λ from both end parts of the steel pipe 1 is formed into a flat part 1a to bring a variation of a pipe diameter into 0.02% or less of a steel pipe outside diameter, wherein λ is an initial buckling half-wavelength of the steel pipe and satisfies λ=1.72√(De/2*t), where De represents the outside diameter of a pipe end and t represents a sheet thickness of the steel pipe.
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Inventors:
Hisakazu Tajika
Takahiro Sakimoto
Satoshi Iki
Takahiro Sakimoto
Satoshi Iki
Application Number:
JP2013067775A
Publication Date:
January 08, 2014
Filing Date:
March 28, 2013
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21D5/01; B21D51/18; B23K9/00; B23K9/028; E02D5/24; F16L13/02; B21C37/08; B21C37/30; B21D3/14
Domestic Patent References:
| JP2010230107A | ||||
| JP2009285711A | ||||
| JP2008307594A | ||||
| JP53104563A | ||||
| JP4965980A |
Attorney, Agent or Firm:
Toshihiko Ishikawa