(19)

(11)

EP 0 822 873 A2

(12)

(43) Date of publication: 11.02.1998 Bulletin 1998/07 (21) Application number: 96912176.0 (22) Date of filing: 24.04.1996

(51) International Patent Classification (IPC):  B21D 51/ 26( . ) (86) International application number: PCT/IB1996/000455 (87) International publication number: WO 1996/035525 (14.11.1996 Gazette 1996/50)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 25.04.1995 US 19950428386 (71) Applicant: WEIRTON STEEL CORPORATION Weirton, WV 26062-4989 (US)	(72) Inventors: SAUNDERS, William, T. deceased (US) DALRYMPLE, William, H. Weirton, WV 26062 (US) JENKINS, Leonard, A. Pittsburgh, PA 15241 (US) WANG, Jyhwen Coraopolis, PA 15108 (US) (74) Representative: W.P. Thompson & Co.  Coopers Building, Church Street Liverpool L1 3AB Liverpool L1 3AB (GB)