(19)

(11)

EP 4 214 007 A2

(12)

(88) Date of publication A3: 28.04.2022 (43) Date of publication: 26.07.2023 Bulletin 2023/30 (21) Application number: 21786569.0 (22) Date of filing: 14.09.2021

(51) International Patent Classification (IPC):  B21C 29/00(2006.01) C21D 1/667(2006.01) (52) Cooperative Patent Classification (CPC): B21C 29/003; C21D 1/667; C21D 8/06; C21D 1/60; C21D 1/613; C21D 1/62; C21D 9/0062; C21D 9/0075; C21D 9/0012; C21D 9/0025; C22F 1/002; C22F 1/04 (86) International application number: PCT/IB2021/058333 (87) International publication number: WO 2022/058874 (24.03.2022 Gazette 2022/12)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 15.09.2020 IT 202000021730 (71) Applicant: Danieli & C. Officine Meccaniche S.p.A. 33042 Buttrio (IT)	(72) Inventors: GALLI, Alessandro Mario 23845 Costa Masnaga (IT) MERLINI, Mattia 25128 Brescia (IT) FEDELE, Mauro 25124 Brescia (IT) (74) Representative: Celona, Antonio et al Notarbartolo & Gervasi S.p.A. Viale Achille Papa, 30 20149 Milano 20149 Milano (IT)