Investor Presentation

Investor Presentation

Disclaimer This presentation contains forward-looking statements. Forward-looking statements are based on management s current views and assumptions and involve known and unknown risks that could cause actual results, performance or events to differ materially from those expressed or implied by those statements. These statements include information regarding management strategy, investment plans, development and growth of the steel pipe and oil and gas industries, trends and other prospective data, including trends regarding the development of raw material costs and the levels of investment in oil and gas drilling worldwide and general economic conditions in the countries where Tenaris operates and sells its products and services. We do not undertake to update any forward-looking statement to reflect events or circumstances after the date of this document or to reflect the occurrence of unanticipated events. Except where otherwise stated, the data presented herein is based on Tenaris analysis and estimates. Investor Presentation Tenaris November 2018 2

Global Leader in Steel Pipes for the Energy Industry Manufacturing facilities in 18 countries Annual manufacturing capacity of 6.9 million tons of steel pipes 9M 2018 Sales by Region (US$5.6 Bn) 4 Electric steel shops, 13 Seamless rolling mills, 25 Welded tube mills, 53 Heat treatment lines, and 103 Premium threading lines R&D centers in 5 countries Service and distribution network in more than 30 countries 21,605 employees (2017) Revenue: US$ 7.4 billion (9M18 Annualized) Stock exchange listings: New York, Italy, Buenos Aires and Mexico Investor Presentation Tenaris November 2018 3

Global OCTG Demand Recovering [Mill Tn] 17,6 USA & CANADA LATIN AMERICA 8,0 1,1 3,8 11,8 4,0 0,8 2,6 INTERNATIONAL CHINA & RUSSIA 9,6 2,3 0,6 2,7 13,7 5,8 0,5 2,5 15,0 5,9 0,7 3,0 4,8 4,4 3,9 4,8 5,5 2014 2015 2016 2017 2018F Investor Presentation Tenaris November 2018 4

Worldwide Operations Investor Presentation Tenaris November 2018 5

Differentiated Products Full range of high quality products (seamless and welded pipes, premium connections, large OD OCTG and connectors, line pipe, mechanical pipe, accessories, sucker rods and coiled tubing for use in all types of oil and gas drilling, well completion and transportation activities. Extensive range of Rig Direct technical and supply chain services. Global reach, financial strength and reliability to support customers through complex projects. Wedge Series BlueDock Connector TenarisXP Series Dopeless technology BlueCoil technology DemandSync PipeTracer Rig Direct Academy technology Investor Presentation Tenaris November 2018 6

Innovative Services. Rig Direct Integrated solution that addresses costs, quality, operational efficiency and sustainability Active in 30 countries around the world 40 service and distribution facilities Rig Direct OCTG Shipments 57% 20+ years of experience in Rig Direct USA: extensive adoption in Permian, Eagle Ford and Haynesville; extending to other regions 16% 29% 40% 50% Canada: widespread adoption facilitating market share gains Latam: fully established in Mexico and Argentina now in Colombia and Ecuador 2014 2015 2016 2017 9M 2018* Argentina & Mexico US & Canada RoW OCTG (%) * 9M 2018 annualized EH: fully established in North Sea, Romania, Thailand and Indonesia, expanding in Caspian and UAE Investor Presentation Tenaris November 2018 7

International Positioning Middle East LNG Projects Offshore Recovery Latin America Tenaris maintains strong position as a supplier to the major Middle East NOCs with the project management, technology and financial strength to support complex regional gas projects Growing global demand for gas is creating the conditions for LNG expansions and developments (eg Australia and Mozambique) Competitive offshore projects (eg Liza) are being sanctioned and pointing to a gradual recovery in offshore demand Energy reform/opening in Mexico and Brazil, and the Vaca Muerta shale development in Argentina are attracting private investment activity Investor Presentation Tenaris November 2018 8

US Regional Focus Tenaris s presence in the US aligned with major oil and gas basins State of the art manufacturing center Shorter, more efficient and flexible supply chain Bakken & Rockies Lead time & inventory reduction Product development (TSH Wedge XP ) California & Alaska Bakersfield Denver Mid-Continent Oklahoma City Hickman Eastern Pittsburgh PipeTracer digital pipe by pipe tracking system Permian Midland Conroe Bay City Gulf Coast Houston Freeport Westwego Manufacturing facility Service center Regional commercial office Gulf of Mexico Third party yard partners Investor Presentation Tenaris November 2018 9

US OCTG Market Dynamics Mill tons 8 7 6 5 4 3 2 1 0 2014 2015 2016 2017 9M 2018 Domestic Imports % Domestic supply 60% 50% 40% 30% 20% 10% 0% Ramping up Bay City to support domestic production. Restart of Conroe provides additional finishing capacity for Bay City production. Increasing production at Hickman. Investor Presentation Tenaris November 2018 10

Financials Support the Upcycle EBITDA USD million % 3.000 30% 2.500 25% 2.000 20% USD million 3.000 2.500 2.000 1.500 Cash Flows 1.500 15% 1.000 1.000 500 10% 5% 500 0 500 2014 2015 2016 2017 9M 2018 2014 2015 2016 2017 9M 2018 0% 1.000 1.500 EBITDA % EBITDA margin OCF Capex FCF Days 400 300 200 100 WK Cycle Shipments (Mill Tons) 4,0 3,0 2,0 USD million 600 500 400 300 Dividend % 4,0 3,5 3,0 2,5 2,0 0 100 2014 2015 2016 2017 9M 2018 Days of inventory Days of payables Days of receivables Shipments (9M 2018 Annualized) 1,0 0,0 200 100 0 2014 2015 2016 2017 1,5 1,0 0,5 0,0 Days of WK Dividend % Dividend yield Investor Presentation Tenaris November 2018 11

Closing Remarks Oil and gas drilling recovery gradually spreading to most regions: North American shales will remain a key driver in coming years Tenaris is increasing US production at Bay City and its other US mills and is strongly positioned to take advantage in all regions and segments where growth is taking place The Rig Direct service model continues to grow around the world as its benefits for the efficiency, capital discipline and time to market of the oil and gas industry are demonstrated in the field Tenaris has a solid balance sheet and its good financial performance gives it the flexibility to take advantage of market opportunities Investor Presentation Tenaris November 2018 12

Investor Presentation Tenaris November 2018 13