(19)

(11)

EP 4 739 811 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24738325.0 (22) Date of filing: 06.07.2024

(51) International Patent Classification (IPC):  C22C 38/44(2006.01) C22C 38/02(2006.01) C22C 38/42(2006.01) C22C 38/04(2006.01) C22C 38/00(2006.01) C21D 6/00(2006.01) (52) Cooperative Patent Classification (CPC): C22C 38/44; C22C 38/02; C22C 38/04; C22C 38/001; C22C 38/42; C21D 6/004 (86) International application number: PCT/EP2024/069141 (87) International publication number: WO 2025/012182 (16.01.2025 Gazette 2025/03)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 07.07.2023 EP 23184294 (71) Applicant: Alleima Tube AB 811 81 Sandviken (SE)	(72) Inventors: GULLBERG, Daniel 81181 Sandviken (SE) ÖHLIN, Oscar 81181 Sandviken (SE) (74) Representative: Alleima  Alleima EMEA AB Alleima Global Patent Function Storgatan 2 81181 Sandviken 81181 Sandviken (SE)