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.

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories,  the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.