General Metal Heat Treating Logo

Customer Service


Shipping/Receiving Hours

7:00am - 4:00pm

Customer Service


Shipping/Receiving Hours

7:00am - 4:00pm

Independent Since 1942

General Metal Heat Treating prides itself as an owner-operated company. We know our customers by name and we aim to establish long-term business relationships. We utilize the latest technologies in furnace equipment to provide efficient, high-quality, consistently repeatable processing for our customers.

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Serving All Industries

We provide heat treating services for customers with demanding process requirements. GMHT takes prides in outstanding quality, service and timely delivery to all industries.







Quality You Can Trust

General Metal Heat Treating has been driven by the dedication to our customers and expert craftmanship for over 80 years. We are trusted for our first-rate work and our exceptional service. GMHT is ISO 9001:2015/AS9100D and Nadcap AS7102 Certified.

close-up of a hardness testing machine
a hot metal rod coming out of a hot metal furnace


At General Metal Heat Treating, we consider ourselves to be craftsmen, not salesmen. Our most effective sales effort has always been the quality of our work.

a pile of hot glowing steel parts


 We pride ourselves in our ability to meet the needs of our customers with accuracy and consistency, while providing fair pricing and fast turnaround times.

a tray of steel parts in a hot furnace


General Metal’s ability to achieve the desired mechanical properties of steel is the result of our extensive knowledge and experience in controlling microstructure.

A Leader in Heat Treating Services

GMHT has proudly served Cleveland and surrounding areas for over 8 decades! In the process, we have amassed a wealth of thermal processing knowledge and experience for your company to tap into. From material application questions and hardness testing to high-quality finished parts, we have a track record of helping our customers meet their goals time after time. It’s no coincidence that the majority of our customers have come to us as referrals.

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