(19)

(11)

EP 1 011 891 A1

(12)

(43) Date of publication: 28.06.2000 Bulletin 2000/26 (21) Application number: 98934043.5 (22) Date of filing: 06.07.1998

(51) International Patent Classification (IPC)7: B21D 47/01 // B21D51:00 (86) International application number: PCT/SE9801/329 (87) International publication number: WO 9901/242 (14.01.1999 Gazette 1999/02)

(84) Designated Contracting States: AT DE DK ES FI FR GB IT (30) Priority: 04.07.1997 SE 9702635 24.09.1997 SE 9703445 (71) Applicant: Avesta Sheffield Aktiebolag S-774 00 Avesta (SE)	(72) Inventor: Carlsson, Leif 465 91 Nossebro (SE) (74) Representative: Bjelkstam, Peter  Bergenstrahle & Lindvall AB,Box 17704 118 93 Stockholm 118 93 Stockholm (SE)