Investor Presentation

Worldwide Operations Grande Prairie Nisku Calgary Edmonton Red Deer Prudential Bienfait AlgomaTubes St. John's Camanche Geneva Catoosa Bakersfield Denver ☐ West Virginia Oklahoma City Midland Houston Westwego Bay City Monterey Poza Rica Reynosa Tamsa Guadalajara Mexico City Toronto Wilder Pittsburgh Brookfield Koppel Hickman Ambridge ■ Солгое Freeport Ciudad del Carmen Dos Bocas H Villahermosa Comalcalco Maracaibo Caracas TuboCaribe Investor Presentation Barrancabermeja Barcelona Bogotá Villavicencio Quito Machachi Shushufindi Lima Sta. Cruz de la Sierra Natal Contab Rio das Ostras Rio de Janeiro Mendoza Siderca Santiago Montevideo Villa Mercedes Siat Senillosa Neuquén Comodoro Rivadavia ■Rio Gallegos Punta Arenas Hammerfest Tananger Stavanger Aberdeen Esbjerg Copenhagen Moscow Absai Amsterdam Luxembourg Paris Essen Campina Lugano Ploiesti Dalmine Skotub Aktau Bucharest Beijing Baku Yulin Sepul NKKTubes Algiers Qingdao Lagos Accra Takoradi Onne Luanda Tenaris Erbil Alexandria Cairo <-Basra Dammam Bahrain Dubai Saudi Steel Pipe Abu Dhabi Manufacturing Centers R&D Centers Bangkok Songkhla Ho Chi Minh Singapore Batam Sorong SPU Jakarta ■ Darwin Perth Dampier Service Centers Commercial/Administrative Offices March 2020 4

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