PROCESS FOR CONTROLLING REDUCTION OF REELER OR PIERCER IN MANNESMANN PIPE MAKING PROCESS AND DEVICE FOR PRACTICING THE SAME PROCESS

Title:

PROCESS FOR CONTROLLING REDUCTION OF REELER OR PIERCER IN MANNESMANN PIPE MAKING PROCESS AND DEVICE FOR PRACTICING THE SAME PROCESS

Document Type and Number:

Japanese Patent JPS53141154

Kind Code:

A

Abstract:

PURPOSE: To provide the subject process and device wherein the reduction applied to the end part of a pipe is made weaker than that applied to the intermediate part thereof, thereby shortening the length of the trumpet-shaped thin part produced at the pipe end part.

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Inventors:

AKIYAMA MASAYOSHI
HIRAOKA NOBUAKI
KAGEYAMA SHIGEKI

Application Number:

JP5688577A

Publication Date:

December 08, 1978

Filing Date:

May 16, 1977

Export Citation:

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Assignee:

SUMITOMO METAL IND

International Classes:

B21B37/78; B21B19/00; (IPC1-7): B21B19/00

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