ASME SA312 TP304H SMLS HWF Serrated Fin Tube For Heat Exchanger

ASME SA312 TP304H SMLS HWF Serrated Fin Tube

ASME SA312 TP304H is a high-carbon variant of the classic 304 austenitic stainless steel. The "H" designation indicates its specific formulation for high-temperature service, providing guaranteed elevated temperature strength while maintaining good general corrosion resistance.

The ASME SA312 TP304H Seamless HWF Serrated Fin Tube represents an advanced thermal engineering solution that combines multiple sophisticated technologies. This bimetallic construction features a seamless TP304H base tube with carbon steel serrated fins attached through high-frequency welding, creating an exceptionally efficient heat transfer surface for demanding high-temperature applications.

Chemical Composition

Mechanical Properties (Base Tube - TP304H)

Key Features & Advantages

1.Enhanced Heat Transfer Efficiency: The serrated fin design creates turbulence in the gas flow, breaking boundary layers and significantly improving heat transfer coefficients compared to solid fins.

2.Guaranteed High-Temperature Performance: TP304H base tube ensures maintained mechanical strength and microstructural stability at temperatures up to 800°F (427°C) and beyond.

3.Optimized Material Utilization: Carbon steel fins provide cost-effective heat transfer enhancement while the stainless steel base tube handles corrosive media and high-temperature requirements.

4.Superior Bond Integrity: High-frequency welding creates a metallurgical bond with minimal thermal affected zone, ensuring excellent heat conduction and mechanical reliability.

5.Reduced Fouling Tendency: The segmented fin pattern helps minimize fouling accumulation in dirty gas streams, maintaining long-term performance.

Comparison with Related Options

TP304H vs. TP304:
While both offer good corrosion resistance, TP304H is specifically required for ASME code high-temperature pressure applications due to its guaranteed minimum high-temperature strength, whereas standard TP304 is primarily for corrosion resistance.

Serrated vs. Solid Fins:
Solid fins provide maximum surface area but are more prone to fouling. Serrated fins, while having slightly less surface area, offer superior heat transfer coefficients and anti-fouling characteristics in particulate-laden environments.

Applications of ASME SA312 TP304H SMLS HWF Serrated Fin Tube

1.Power Generation Boilers: As economizer and superheater elements in utility and industrial boilers where high-temperature strength and resistance to steam oxidation are critical.

2.Waste Heat Recovery Units: In high-temperature sections of HRSGs and process waste heat boilers handling corrosive flue gases.

3.Petrochemical Heaters: For convection section tubes in fired heaters where process-side temperatures demand guaranteed high-temperature properties.

4.Industrial Process Heaters: In air heaters and process gas heaters where efficient heat recovery from high-temperature streams is essential.

5.Chemical Processing: High-temperature heat exchangers handling corrosive process media on the tube side with less aggressive gases on the shell side.