Our objective was to develop smaller equipment, so small diameter pipes were mainly used. Fin tubes for heat exchange machines (gas coolers for steel production plants, steam-type air pre-warming machines) are used in chemical engineering, petrochemistry, gas chemistry, and refrigeration systems, etc.
Comparing the CS, SUS, the heat transfer coefficient is improved (CS:45, SUS:14, CU:320) and the size of the equipment is reduced.