Generally Speaking

Fins are used to increase the effective surface area of heat exchanger tubing. Furthermore, finned tubes are used when the heat transfer coefficient on the outside of the tubes is appreciably lower than that on the inside. In other words, the heat transferred from liquid to gas, vapor to gas, such as steam to air heat exchanger, and thermic fluid to air heat exchanger. According to different materials and fabrication process, there are several kinds of fin tubes, such as extruded fin tube, crimped spiral fin tube, G type embedded fin tube, L/KL/LL Foot Fin Tube, etc.

Used as heat transfer element, fin tubes are usually working under high temperature with flue gas. For example, the condition for boiler heat exchanger fin tube is very bad, high temperature, high pressure in corrosive atmosphere. In this case, the finned tubes should have a high performances.

1. Anti-corrosion

2. Anti-wear

3. Lower contact resistence

4. Higher stability

5. Anti-ash deposition

They are widely used in food processing, timber drying, dyeing and printing industry, paper mill plant, pipeline transport, gas recovery, gas pre-heater, textile industry, power transfer, etc.





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