ASTM A312 TP347H Serrated Fin Tube for Furnace Heat Transfer

ASTM A312 TP347H Stainless Steel Seamless Pipe, Serrated Fin Tube, For Furnace Tube

Product Overview

ASTM A312 TP347H is a high-temperature, stabilized austenitic stainless steel with added columbium (niobium) for improved creep strength. When made into Serrated Fin Tubes using High-Frequency Welding (HFW), this tube becomes ideal for furnace convection sections, offering enhanced heat transfer efficiency and extended service life under cyclic thermal stress and oxidizing conditions.

Chemical Composition – ASTM A312 TP347H

Mechanical Properties – TP347H

Advantages of TP347H Serrated Fin Tube

• High Temperature Resistance
  Ideal for superheaters, heaters, and furnaces, TP347H withstands long-term service at elevated temperatures without creep deformation.

• Improved Heat Transfer Efficiency
  The serrated fin design increases turbulence and surface area, boosting heat transfer while minimizing fouling.

• Oxidation & Corrosion Resistance
  Excellent performance in oxidizing atmospheres, especially in fuel-fired furnaces.

• Creep-Strength Enhanced
  Addition of niobium enhances structural stability under high stress and thermal cycling.

• Weldability and Fabrication
  Good weldability with standard procedures; suitable for custom-designed fin configurations.

Application in Furnace Systems

The Serrated Fin Tube made of ASTM A312 TP347H is specifically used in:

• Convection Section of Furnaces
  Absorbs radiant heat and transfers it efficiently to the working fluid (steam, oil, or gas).

• Heater Banks & Superheaters
  Installed where both thermal efficiency and material durability are critical.

• Refinery Fired Heaters
  In hydrocarbon processing, TP347H fin tubes are used in crude, reformer, and hydrotreater furnaces.