 Industrial Steel Treating of Jackson, bringing the heat since 1943, celebrating 80 years in business. Over the last 80 years, Industrial Steel Treating of Jackson has gone from humble beginnings to becoming one of the largest and most modern heat treating facilities in the United States. Nearly every car and truck on the road today has parts that were heat treated at IST. Our commitment to quality and service sets us apart, but our dedicated and loyal employee family is why we've been around for 80 years.