Title:
METHOD OF MANUFACTURING HIGH-ALLOY SEAMLESS STEEL PIPE
Document Type and Number:
Japanese Patent JP2000343107
Kind Code:
A
Abstract:
To provide a method of manufacturing a high-alloy seamless steel pipe more efficiently and economically in comparison with the conventional method by reducing flaws caused in the manufacturing process.
A billet made of high-alloy steel is pierced into a hollow pipe with a piercer, and the lubricated/rolled sequentially via an elongator, a plug mill, and a reeler, reheated, and finally fixed in size with a sizer. In such method of manufacturing the high-alloy seamless steel pipe, the inner surface of the pipe obtained through rolling with the plug mill or the reeler is cleaned with fluid.
Inventors:
NAKABASHI SATORU
MIYATA YUKIO
KITA MASAHARU
MIYATA YUKIO
KITA MASAHARU
Application Number:
JP15193699A
Publication Date:
December 12, 2000
Filing Date:
May 31, 1999
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
B21B23/00; B21B45/02; (IPC1-7): B21B23/00; B21B45/02
Attorney, Agent or Firm:
Yoshio Kosugi (1 person outside)
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