ENGLISH LOCAL VIEWS CONTACT US Products & Services Investors Careers Sustainability R&D Media & Publications About Us Wedge XP™ Connection The new TenarisHydril Wedge connection with extra torque performance for longer laterals LEARN MORE Tenaris Sustainability Report WATCH VIDEO COMPANY NEWS Tenaris to exhibit at Argentina Oil & Gas Expo 2017 INVESTOR NEWS AUG 31, 2017 Tenaris reports no major damage to its industrial sites in South Texas following Hurricane Harvey STOCK INFORMATION EXCHANGE LAST +/- % NYSE* 28.32 -0.28 Milan 12.03 -0.17 *One ADR represents 2 ordinary shares CORPORATE PROFILE Tenaris is a leading supplier of tubes and related services for the world’s energy industry and certain other industrial applications. Our mission is to deliver value to our customers through product development, manufacturing excellence, and supply chain management. We seek to minimize risk for our customers and help them reduce costs, increase flexibility and improve time-to-market. Tenaris employees around the world are committed to continuous improvement by sharing knowledge across a single global organization. TERMS & CONDITIONSCUSTOMER FEEDBACKSITEMAP Copyright © 2003-2017 Tenaris. All rights reserved. FOLLOW US

ENGLISH LOCAL VIEWS CONTACT US Products & Services Investors Careers Sustainability R&D Media & Publications About Us Tenaris / Sustainability / Quality Certifications EMAIL THIS PAGE Quality Certifications SUSTAINABILITY QHSE Policy Quality Quality Certifications Health and Safety HSE Certifications Environment and Energy Management Community FILTER BY Region Global Europe Far East & Oceania Middle East & Africa North America South America Tenaris Sites Aberdeen Aktau AlgomaTubes Almaty Arcore Bakersfield Batam Bay City Cairo Calarasi Calgary Campina Caracas Coiled Tubes - Downhole center Coiled Tubes - Subsea Center Confab Conroe Coseley Costa Volpino Counce Dalmine Dammam Ecuador Esbjerg FAST - Dalmine Freeport Hickman Houston McCarty Monterrey Montevideo Moscow Nisku NKKTubes Norway Onne and Port Harcourt Piombino Prudential Qingdao R&D Argentina R&D Brazil R&D Japan R&D Mexico Sabbio Santa Cruz de la Sierra Scrapservice Siderca Silcotub SPIJ Tamsa Tenaris Texas ARAI TuboCaribe UAE Siat - Valentín Alsina Veracruz Siat - Villa Constitución Villa Mercedes Product Sector Applies to all sectors Automotive Coiled and Umbilicals DIND Drill Pipe Gas Cylinders Gas, Water & Plumbing Industrial Pipe Line Manufacturing of Pressure Vessels Marine materials Mechanical OCTG Power Generation Structural Sucker Rods Certification Body American Bureau of Shipping - ABS American Petroleum Institute Apragaz ASME Bureau Veritas Central Boilers Board Det Norske Veritas DNV GL DVGW Germanischer Lloyd Intertek Japan Quality Assurance Organization Japanese Standards Association Lloyds Register Lloyds Register EMEA Lloyd's Register Quality Assurance Organismo Argentino de Acreditacion PJSC RPA CNIITMASH Russia RINA SAPA InterSystem SGS The National Board of boiler & pressure vessel inspectors T-Standart TÜV Rheinland TÜV Sud TUV SUD Germany VNIIGAZ TERMS & CONDITIONSCUSTOMER FEEDBACKSITEMAP Copyright © 2003-2017 Tenaris. All rights reserved. FOLLOW US