We don’t just treat metals—we strengthen industries.

Advanced heat treatment and furnace engineering for stronger, more durable metal components across the U.S. and Mexico.

advanced heat treatment

Specializing in cutting-edge heat treatment processes.

Furnace Solutions

Designing tailored furnace systems for diverse applications.

Comprehensive Services

From design to maintenance support.

Industry Leadership

Decades of innovation and expertise.

Controlled Processes. Proven Results.

Heat Treatment Process Capabilities

Advanced heat treatment processes for demanding production environments.

Carburizing

Delivers stronger, longer-lasting metal components for high-performance applications.

Carbon Nitriding

Enhances surface hardness and durability for high-performance applications.

Nitriding

Provides superior surface hardness, wear resistance, and long-lasting performance.

GSN / Ferritic Nitrocarburizing

Delivers superior wear resistance and fatigue strength with a durable, low-friction finish.

Annealing

Improves machinability, stress relief, and optimal material performance while enhancing durability, structural integrity, consistency, toughness, and reliability.

Hardening / Quench & Temper

Delivers superior strength, toughness, and wear resistance for demanding applications

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Why Dowa North America?

Dowa North America is a trusted leader in commercial heat treatment and industrial furnace engineering. With state-of-the-art facilities in the United States and Mexico, we provide cutting-edge solutions that enhance metal durability, improve performance, and optimize manufacturing efficiency. Our commitment to quality, precision, and innovation makes us the partner of choice for industries including automotive, aerospace, and heavy equipment.

  • 2 Facilities, 1 Vision – Advanced manufacturing plants in the U.S. & Mexico

  • 135+ Years of Experience – Deep industry expertise
  • Furnace Solutions – Tailored heat treatment & furnace technology

Process – Science – Performance

Heat Treatment Knowledge Center

Learn the processes that improve strength, durability, and performance in modern manufacturing.

Passionate – Dedicated – Professional

Explore Your Next US
Career Opportunity!

While our Bowling Green facility has been operating since 1997, DOWA’s history dates back to 1884, when our predecessor, Fujita Gumi, acquired the Kosaka mine from the Meiji government in Japan.

Our core values serve as the foundation of our organization, guiding everything we do. Each value is intentionally chosen and aligned to foster the work environment we strive to achieve.

Our employees are our greatest asset, and we are committed to their well-being. That’s why we offer one of the best benefits packages in the industry, providing comprehensive support and rewarding career growth.

Call us for inquiry : Monday to Friday : 9 am – 5 pm

+1 (419) 354-4144

+1 (419) 354-4144