LOW CARBON ALLOY STEEL TUBE HAVING ULTRA HIGH STRENGTH AND EXCELLENT TOUGHNESS AT LOW TEMPERATURE AND METHOD OF MANUFACTURING THE SAME - Patent 2007914

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EP 2 007 914 A2

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(88)	Date of publication A3:
	31.01.2008

(43)	Date of publication:
	31.12.2008 Bulletin 2009/01

(21)	Application number: 07734171.7

(22)	Date of filing: 02.04.2007

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International Patent Classification (IPC):

C22C 38/00^(2006.01)

(86)	International application number:
	PCT/IB2007/000850

(87)	International publication number:
	WO 2007/113642 (11.10.2007 Gazette 2007/41)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

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Priority:

03.04.2006 US 395322

(71)	Applicant: Tenaris Connections AG
	9494 Schaan (LI)

(72)	Inventors:
	LOPEZ, Edgardo, Oscar Veracruz 94290 (MX) ALTSCHULER, Eduardo I-24100 Bergamo (IT)

(74)	Representative: Cinquantini, Bruno et al
	Notarbartolo & Gervasi S.p.A. Corso di Porta Vittoria, 9 20122 Milano 20122 Milano (IT)

(54)	LOW CARBON ALLOY STEEL TUBE HAVING ULTRA HIGH STRENGTH AND EXCELLENT TOUGHNESS AT LOW TEMPERATURE AND METHOD OF MANUFACTURING THE SAME