Welding Fin Tube, Serrated Type, Helical Serrated, Base Tube ASTM A312 TP347 with SS409 Fin Material

Welding fin tubes with serrated helical fins which a base tube made of ASTM A312 TP347 stainless steel are Better suited for applications involving corrosive environments and high temperatures, such as in chemical processing, petrochemical, and renewable energy industries. While Grade P9 more suited to high-pressure, high-temperature environments such as in power generation and industrial furnaces. ASTM A312 TP347: Austenitic stainless steel stabilized with columbium, offering excellent corrosion and oxidation resistance. And TP347 best for applications requiring high corrosion resistance and stability at elevated temperatures.

HFW Serrated Fin Tubes means High Frequency Welded Helical Spiral Serrated Fin Tubes. HFW serrated fin tubes serrated fins cut from metal strip and then helically wound around the base tubes. This serrated fin has better heat transfer properties compared to solid fins.The serrated fin tubes have better heat transfer effect than solid fin tubes. And the serrated fins also improve the function of preventing ash deposition.The High Frequency Welded Spiral Serrated FinTube is one of the most widely used HFW spiral fin tubes, and is usually used in power plants, waste treatment systems and petrochemical industries and so on.

Applications:

1. Power Generation:

• Boilers: Used in boiler economizers and superheaters to improve heat recovery and steam generation efficiency.
• Heat Recovery Steam Generators (HRSGs): Employed in HRSGs to recover waste heat from gas turbines, enhancing the efficiency of combined cycle power plants.

2. Petrochemical and Refinery Industry:

• Process Heaters: Used in process heaters to facilitate the efficient transfer of heat to various process streams.
• Air-Cooled Heat Exchangers: Employed in air-cooled heat exchangers to cool process fluids, leveraging the high-temperature and corrosion resistance of TP347.

3. Chemical Processing:

• Reactor Effluent Coolers: Used to cool reactor effluents and other high-temperature process streams in chemical manufacturing plants.
• Heat Recovery Units: Employed to capture and reuse heat from chemical processes, improving energy efficiency.

4. Oil and Gas Industry:

• Offshore Platforms: Used in heat exchangers on offshore platforms where resistance to saltwater corrosion and high-pressure environments is essential.
• Gas Processing: Employed in gas coolers and heaters to facilitate efficient heat transfer in natural gas processing facilities.

5. Industrial Furnaces and Ovens:

• High-Temperature Heat Exchangers: Used in heat exchangers for high-temperature industrial furnaces and ovens, where materials must withstand extreme temperatures and oxidizing environments.

6. Renewable Energy:

• Solar Thermal Systems: Utilized in solar thermal collectors to enhance heat transfer efficiency from solar radiation to the working fluid.
• Geothermal Heat Pumps: Employed in geothermal heat pump systems to manage heat dissipation or absorption.

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Features:

1. Fast welding speed
2. Strong self-cooling effect of weldments
3. Resistance to oxidation
4. Good microstructure and properties of the weld
5. Corrosion resistance
6. Abrasion resistance
7. Low contact thermal resistance
8. High stability
9. Anti ash ability
10. Large heat exchange area

Chemical Composition:

ASTM A312 TP347 Stainless Steel: TP347 is an austenitic stainless steel containing columbium (niobium) which provides enhanced resistance to intergranular corrosion and stabilization against carbide precipitation. It is ideal for high-temperature and corrosive environments.

Mechanical Characteristics: