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Welded On Serrated Finned Tube, The fin strip is wound spirally onto the tube and welded continuously to the tube along the spiral root. As per type "WO", but fins are serrated.

Advantages: Higher heat transfer coefficient, for the same pressure drop compared with WO fin.

Materials: 

Base tube: Carbon Steel, Low Alloy Steel , Stainless Steel , Nickel Alloys , Nickel Alloys

Fins: Carbon Steel,Low Alloy Steel,Ferritic Stainless Steel,Austenitic Stainless Steel

Fields of application:

Fired Heaters, Heat Exchangers, Boilers, Pre-Heaters, Coolers, Heat Pipes, Dryers, Heaters.

Manufacturing process:

The fin strip is spirally wound onto the tube and welded continuously to the tube along the spiral foot. Welding process: HF, SF, TIG, MIG, MAG

Serrated fin tube is now more and more popular in the manufacturing of boiler, pressure vessel and other heat exchanger equipments. It has more advantages than other common solid fin tube, which mainly includes:

1.Higher heat transfer coefficient. The serrate can make the gas flow across the fins freely, enhancing the turbulent motion and improving the heat transfer effect. Researches show that serrated fin tube’s heat transfer efficiency is about 15-20% higher than common solid fin tube.

2.Reduce metal consume. Due to the higher heat transfer coefficient, for the same amount of heat, serrated fin tube is with less heat transfer areas, which help reduce the metal consume.

3.Anti-ash-deposition and anti-scaling. Due to the serrate, it is very hard for the serrated fin tube to deposit the ash and scaling.

4.It is more flexible to adapt to the changes of gas flow direction.

5. Serrated fin tube is lighter than solid fin tube.

In order to forward you a promt offer we would be pleased to receive you detailed enquiry containing:

• Base tube material and quantity

• Base tube size

• Fin material

• Fin type

• Fin diameter or height

• Fin thickness

• Fins per inch, meter or fin pitch

• Lenght of plain, unfinned ends

(nessesary to roll or weld the tubes into tubeplate or assembly)