Steam coils are needed to heat process tanks, etc. Many of the end uses require purity and cannot tolerate any metallic contact with a plating bath. Orion has perfected the application of pore free coatings to satisfy the purity and chemical resistance requirement.
Plate coils can also be banked to form a suction heater, which allows for the fluid to be heated as it is pumped out of the tank and into a process. This is advantageous especially where only the fluid required for the process is heated and reduces energy costs, as the whole tank will not have to be maintained at the high temperature required for the process.