(19)

(11)

EP 3 359 703 A1

(12)

(43) Date of publication: 15.08.2018 Bulletin 2018/33 (21) Application number: 15905676.1 (22) Date of filing: 09.10.2015

(51) International Patent Classification (IPC):  C22C 38/00(2006.01) (86) International application number: PCT/CN2015/091544 (87) International publication number: WO 2017/059578 (13.04.2017 Gazette 2017/15)

(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: MA (71) Applicant: NV Bekaert SA 8550 Zwevegem (BE)	(72) Inventors: LIU, Xiaojiang Jiangyin Jiangsu 214429 (CN) SHEN, Li Jiangyin Jiangsu 214429 (CN) (74) Representative: Vangheluwe, Lieven Germain L.  NV Bekaert SA IPD - PC6030 Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)