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Heating & Cooling Coils - Process Heating

Process Heating - PulpPaper
Lumber dry kiln
Pulp & paper dryer
  • Tube Materials: 304 or 316 Stainless Steel,
  • Fin Materials: Aluminum, Epoxy Coated Aluminum, Copper, Cupronickel, Stainless Steel
  • Optional Gasketed Removable Headers
  • Corrosion Resistant Coatings Available


  • ASME
  • UL
  • CRN

Curing Ovens

Heated ovens are used for preheating metal parts in preparation for various coating processes, drying parts by eliminating water or moisture accumulated during pre-treatment washing, or curing various coatings. Composite structures used in the automotive and aircraft industries which are assembled with epoxy resins many times require oven curing with heated air. Coils can be designed to work with any heating medium such as steam, thermal oil, or other high temperature thermal fluid. Stainless steel (304 and 316) tubes and fins can be used for temperatures as high as 1700 deg F (926 deg C).  


Heated air can be used to effectively dry dimensional lumber in dry kilns, as well as other wood products such as plywood, fiberboard, and particle board. Heated air drying is also an important process in the manufacture of wood pellets and other pelletized biomass products. Many grains including corn, wheat, and barley are dried using heated air. Heating coils can be designed with wide fin spacing or bare tubes to resist fouling and tolerate airstreams containing dirt and dust.

Pulp and Paper

Pulp drying ovens require large quantities of heated air typically generated using steam heating coils. Colmac can supply replacement steam heating coils for Flakt airborne pulp dryers. We have cooperated with Daken Enterprises Ltd and other companies specializing in this field to develop robust replacement steam coil designs which extend the working life of these steam coils.  

Hot Oil, Steam, Thermal Fluids

CoilPRO selection software allows users to accurately select air heating coils for process heating applications using any heating medium including hot water, steam, hot oil, Paratherm, Duratherm, Dowtherm, or other thermal fluids. Where appropriate tubeside enhancement devices such as turbulators can be applied for increased capacity with reduced pumping power.


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