Established in 1988 by O’Brien Steel’s leadership team, Certified Heat Treating is the premier heat treater of the Midwest! Today, we provide consistent and high quality services to our customers across the engineering, construction, rail, agriculture, and mining industries.

Our experienced team follows a rigorous quality process including statistical control, continuous monitoring, and a comprehensive final audit. With a commitment to reinvesting in equipment and an adherence to a proven quality process, we are ready to tackle your next job!

Typical Material Thermally Processed

  • Low to high carbon steel
  • Low alloy steel
  • Medium alloy steel
  • Tool steel
  • Gray cast irons
  • Nodular cast irons
  • Stainless steels

Caterpillar Approved
Heat Treater