ASME SA192 Serrated Fin Tube for HRSG and High-Efficiency Heat Transfer Applications

Our Serrated Fin Tubes are engineered for superior heat-transfer efficiency in demanding thermal systems, especially Heat Recovery Steam Generators (HRSGs), waste heat boilers, and industrial heat exchangers. Manufactured with a high-strength ASME SA192 carbon-moly steel base tube and carbon-steel serrated fins, these tubes are designed to operate under high temperatures, high pressures, and aggressive thermal cycling.

The serrated fin design increases turbulence and disrupts boundary-layer formation, resulting in significantly improved heat-transfer performance compared to solid fin configurations.

• ASME SA192 (High-pressure carbon-manganese steel)

• Standard Compliance: ASTM/ASME

• Typical Applications: Boilers, economizers, HRSG evaporators/superheaters

• Key Properties:

  • High tensile strength

  • Excellent resistance to high-temperature pressure stress

  • Suitable for elevated-temperature service environments

• Outer Diameter (OD): 19 mm – 76 mm (customizable)

• Wall Thickness: 2 mm – 8 mm (according to ASME SA192 requirements)

• Tube Length: Up to 18 meters (longer lengths available upon request)

• Carbon Steel (CS)

• Ideal for general heat-transfer applications with moderate corrosion requirements

• Provides strong mechanical bonding and structural durability

• Fin Type: Serrated (segmented) fin

• Fin Height: 6–18 mm (customized)

• Fin Thickness: 0.6–1.5 mm

• Fin Pitch: 8–12 fins per inch (FPI)

• Fin Bonding Method:

  • High-frequency resistance welding

  • Ensures full metallurgical bond for optimal heat transfer

The serrated fin design cuts the fins into smaller segments, increasing turbulence and maximizing heat transfer on the gas side. This improves thermal efficiency, especially in low-to-moderate gas velocity operations.

• ASME SA192 provides excellent high-temperature tensile and creep resistance.

• Carbon-steel fins offer strong mechanical rigidity and long service life.

High-frequency welded serrated fins ensure:

• Full contact between fin and tube

• Low thermal resistance

• Long-term reliability under vibration and thermal cycling

Carbon-steel fins combined with SA192 tubes provide an economical solution without compromising thermal performance.

Our serrated fin tubes are widely used in:

• HRSG (Heat Recovery Steam Generator) systems

• Waste Heat Recovery Units (WHRU)

• Utility and industrial boilers

• Economizers & superheaters

• Air preheaters (APH)

• Petrochemical and refinery heat exchangers

The enhanced turbulence generated by the serrated fins makes them particularly suitable for gas-side heat-transfer applications involving flue gas, exhaust gas, or process gas streams.

Every serrated fin tube is manufactured according to international standards:

• ASME SA192 dimensional and mechanical requirements

• AWS welding quality standards

• NDT testing (Eddy Current, Hydrostatic, or Ultrasonic testing on request)

• Visual inspection and fin-bond integrity testing

We can fabricate serrated fin tubes according to customer drawings or project specifications:

• Tube diameter, wall thickness, and length

• Fin height, thickness, and pitch

• Welding method & surface treatment

• Coating (aluminum spray, galvanizing, or anti-corrosion coatings)