Therma-Flite has a long history of screw conveyor technology and auger design, manufacturing equipment for chemical and process industries all over the world. Therma-Flite (then known as Christian Engineering) designed, built and sold the first hollow screw heat exchanger in 1939 for the food industry. Since these early beginnings, Therma-Flite has continued to develop and re-evaluate the heat exchanger screw conveyor industry. Our processors have lasted longer, processed more, and handled more materials than any other manufacturer in the world.