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.

ASTM A312 TP347H stainless steel fin tube

serrated fin tube for furnace

stainless steel serrated finned tube

ASTM A312 TP347H Serrated Fin Tube for Furnace Heat Transfer Images