(19)

(11)

EP 3 251 375 A1

(12)

(43) Date of publication: 06.12.2017 Bulletin 2017/49 (21) Application number: 16702105.4 (22) Date of filing: 29.01.2016

(51) International Patent Classification (IPC):  H04Q 9/00(2006.01) G05D 22/00(2006.01) E04C 2/00(2006.01) G01N 27/00(2006.01) (86) International application number: PCT/EP2016/051913 (87) International publication number: WO 2016/120445 (04.08.2016 Gazette 2016/31)

(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 MD (30) Priority: 30.01.2015 EP 15153274 (71) Applicant: Rautaruukki Oyj 00620 Helsinki (FI)	(72) Inventor: HONKAKOSKI, Erkki 00620 Helsinki (FI) (74) Representative: Boco IP Oy Ab  Itämerenkatu 5 00180 Helsinki 00180 Helsinki (FI)