The company is primarily focused on producing radiant tubes for indirectly heated atmosphere controlled industrial furnaces. The company originally focused on straight open-ended and SER tubes. "U"-shaped tubes, which are used in many heat treat furnaces, are not also available. These new U-tubes offer an opportunity for many more users of atmosphere furnaces to dramatically improve their operations. Another innovation recently introduced is a radiant tube with spiral internal fins. These tubes not only offer the same long life and superior heat transfer, but they also provide energy savings.