Extruded Serrated Finned Tubes

A179 A192 A210 A213 T5 T9 T11 T22 T91 Carbon Steel A269 A213 304 304L 316 316L Stainless Steel Extruded Serrated Finned Tubes

Integral Finned Tubes / Extruded Aluminum Finned Tubes
HFW High Frequency Welded Helical Spiral Serrated Finned Tubes
A179 A192 A210 A213 T5 T9 T11 T22 T91 Carbon Steel A269 A213 304 304L 316 316L Stainless Steel Extruded Serrated Finned Tubes
B111 C28000 C44300 C68700 C70600 C71500 Brass Alloys Copper Nickel Alloy Integral Low Finned Tubes

Extruded Serrated Finned Tubes is similar with extruded aluminum fin tube, but the aluminum fin is serrated, which great improve the fin tube heat transfer capacity. The extruded finned tubes are produced by compressing an aluminum tube. Aluminum fin is formed from bi-metallic tubes, a base tube and an aluminum muff tube. The fins are formed on a cold rolling process from the wall thickness of the aluminum muff tube. Extruded fin gives very good corrosion protection to the base tube, as the base tube is not visible to the atmosphere in between the fins.

Maximum operating temperature for extruded finned tube is 300 °C.

As a result, the tubes base is completely connected to the main tube. Since these fins never break, deform or loosen, their heating efficiency does not change over time.

Advantages of Extruded Serrated Finned Tubes:

Corrosion resistance in air is very high;

Easy cleaning;

Excellent efficiency;

More reliable capacity for thermal transfer.

Tube material is Copper alloy, copper nickel alloy, Titanium Alloy, carbon steel tubes, stainless steel tubing, A179 A192 A210 A213 T5 T9 T11 T22 T91 Carbon Steel A269 A213 304 304L 316 316L Stainless Steel.

The extruded finned tubes are produced by compressing an aluminum tube, or sleeve, onto the base tube. The bloom is exposed to very high pressures which essentially “grows” the fins into the final fin profiles. This process manufactures an excellent strong joint with great resistance (fin stiffness) as well as exceptional heat transfer capabilities (longevity, temperature range). The advantage of extruded fin tubes are full protection of bare tube against corrosion and fin has high mechanical strength. Extruded finned tubes provide the most stable performance over time as compared to the other fin types. The fin is rolled from an outer aluminum tube by a process using pressure to create a rolled “pressure bond” between the liner tube and fins. The aluminum fin material completely encloses the tube, except at the ends where a tube coating can be applied.

Extruded Serrated Finned Tubes Application:

Primarily extruded finned tubes are used in high temperature conditions and corrosive atmospheric conditions, such as operating temperatures less than 300°C or off-shore applications, air to air heat exchangers for HVAC applications, air dehumidification in air treatment plants, energy recovery in air exhaust system. This kind of fin design is the least economical as compared to the other fin types; main reason due to the increased amount of aluminum used around 40% also increased labors during the manufacturing. However this increased cost can be compensated if using lower grade parent tube material.

Maximum Working Temperature: 600 °F

Atmospheric Corrosion Resistance: OK

Mechanical Resistance: Poor

Fin Material: Copper Fin, Aluminum Fin Aluminum 6063, Aluminium 1100, Aluminium 1060, Aluminium 1070, Aluminium 6010

Base Tube materials: Any material available, such as Carbon steel Tube, A179, A192, A210, A213 T5 T9 T11 T22 T91, stainless steel tube A269/A213 304 316High Frequency Welded Helical Spiral Serrated Finned Tubes Applications