The Monty’s 50 Largest North American Commercial Heat Treats 2021 – #15 Heat Treating Services Corporation of America (HTS)

​​​Since 1999 “The Monty” has been publishing annually a list of the largest commercial heat treaters in North America based upon annual sales, our 2021 list can be found at This year readers will see we became much more ambitious and expanded the list to the 50 largest. In our 15th spot we have Heat Treating Services Corporation of America (HTS).

Based in Pontiac, Michigan HTS is a privately owned commercial heat treater founded in 1978. The company has 4 plants in Michigan and serves the ferrous metal industries with thermal process and clean capabilities, which exceed sixty-four (64) million pounds per month. 

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