Commercial Steel Treating Corporation, ©2019
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Curtis Thermal Processing (CTP) was built in 2009 and is a wholly-owned heat treat facility of Commercial Steel Treating. CTP is located less than one mile from our Curtis Metal Finishing plant in Machesney Park Illinois.


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Welcome to Commercial Steel Treating

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Heat Treating Services at it's Finest

Commercial Steel Treating was founded in 1927 and has grown to become one of the largest commercial heat treating facilities in the USA. We offer a wide array of Heat Treating Services, which include; continuous and batch hardening, solution treating, age hardening and gas nitriding just to name a few.

Commercial Steel Treating recognized the need for corrosion resistant coatings and Curtis Metal Finishing was founded in 1963 to offer this service. For more than 80 years and three generations of family ownership, our companies have built a reputation based on quality, workmanship and superior service. Whether we can supply your requirement or not, our technical staff will eagerly assist you with your Heat Treating and/or Metal Finishing needs.

Please feel free to browse our site and be sure to use our contact options if you have any questions.