Investor Presentation April 2022

Vertical integration in the US • • • ~USD10 billion invested in the US over the past 15 years. Largest US domestic producer complemented by imports from the rest of our industrial system. Vertical integration with domestic steel shop for local steel bar production. Serving many of the leading shale operators, e.g., ConocoPhillips, Diamondback Energy and Pioneer Natural Resources. Full product range supplemented with Rig Direct® Services and digital integration. Denver Bakersfield Oklahoma City Hickman Investor Presentation Midland Brookfield Ambridge Pittsburgh Koppel West Virginia Wilder Conroe Westwego Bay City Baytown Freeport Tenaris Manufacturing Centers Regional Comercial Offices ■ Service Centers Steel Shop April 2022 10 10

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