Title:
MANUFACTURE OF SEAMLESS STEEL PIPE HAVING LARGE DIAMETER
Document Type and Number:
Japanese Patent JPS6199503
Kind Code:
A
Abstract:
A method of forming seamless metal tubing and pipes of large diameter in excess of 500 mm diameter. A thickwalled hollow body is made by continuous casting. Rolling the continuously cast hollow body over a mandrel in an oblique rolling mill to the desired weight per unit length. Radially expanding the rolled hollow body while maintaining its weight per unit length.
Inventors:
URURITSUHI PEETAAZEN
Application Number:
JP22203085A
Publication Date:
May 17, 1986
Filing Date:
October 07, 1985
Export Citation:
Assignee:
URURITSUHI PEETAAZEN
International Classes:
B21C37/06; B21B23/00; B21B19/06; B21B19/08; (IPC1-7): B21B23/00
Domestic Patent References:
| JPS58199603A | 1983-11-21 | |||
| JPS5912362A | 1984-01-23 | |||
| JPS57177812A | 1982-11-01 |
Attorney, Agent or Firm:
Toshio Yano