Method for manufacturing heavy wall steel pipe

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United States of America Patent

PATENT NO 9506132
APP PUB NO 20150247227A1
SERIAL NO

14433727

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Abstract

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A method for manufacturing a heavy wall steel pipe includes a cooling step in which a steel pipe, with a wall thickness of ½ inch or more, that has been heated to the gamma range is dipped in water while supporting and rotating the steel pipe about the axis of pipe, an axial stream which is a water flow in the direction of axis of pipe is applied to the inside surface of the steel pipe under rotation in the water, and an impinging stream which is a water flow impinging on the outer surface of the pipe is applied to the outer surface of the steel pipe under rotation in the water.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO 100-0011

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Hiroyuki Tokyo, JP 240 4004
Ishiguro, Yasuhide Tokyo, JP 42 266
Ishikawa, Kazutoshi Tokyo, JP 45 306
Katsumura, Tatsuro Tokyo, JP 23 34
Sugano, Koji Tokyo, JP 54 536

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