Investor Presentaiton

FOUR BUSINESS LINES MANAGING RISKS WITH THEIR POTENTIAL Revenue Breakdown* Production Centers INFRASTRUCTURE INDUSTRIAL AUTOMOTIVE ENERGY & PROJECT & CONSTRUCTION 15% C • Gemlik (TR) Panama City (USA) • Mobile (USA) Spiral Welded Pipes Products LSAW Line Pipes ERW Line Pipes 5 *As of September 30, 2023 19% C • • Gemlik (TR) Halkalı (TR) Houston (USA) ERW Natural Gas Pipes Industrial Pipe and Profiles Water Pipes Construction Pipe and Profiles SRM Installation Pipes • 13% • Halkalı (TR) . Gemlik (TR) • Vobarno (IT) Hydraulic Cylinder Pipe Cold Drawn Pipes Advance Processed Pipes Precision Pipes and Profiles C 53% • Gemlik (TR) Houston (USA) ERW Line Pipes • OCTG Pipes BORUSAN MANNESMANN

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