ASTM A376 TP347H Stainless Steel Seamless Pipe Solid Fin Tube With Carbon Steel Fin Strip

ASTM A376 TP347H Stainless Steel Seamless Pipe, Solid Fin Tube, With Carbon Steel Fin Strip

Introduction

This finned tube is made from ASTM A376 TP347H, a high-temperature austenitic stainless steel pipe, combined with carbon steel solid fins welded onto the outer surface using high-frequency welding (HFW). It is widely used in high-temperature heat exchangers, furnaces, and power plant economizers, where enhanced heat transfer and structural durability are critical.

Chemical Composition

Base Tube – ASTM A376 TP347H

Fin Strip – Carbon Steel (e.g., Q235B)

Mechanical Properties

Advantages

• Excellent High-Temperature Resistance: TP347H is stabilized with niobium for long-term strength at elevated temperatures.

• Strong Weldability: High-frequency welding ensures firm bonding between tube and fins.

• Enhanced Heat Transfer Surface: Solid fins increase surface area and improve heat dissipation.

• Cost-Effective Fin Material: Carbon steel fins reduce costs while maintaining adequate thermal performance.

• Mechanical Durability: Good resistance to thermal stress and mechanical vibration in fired heaters and economizers.

Applications

Used in high-temperature and high-pressure systems, such as:

• Furnace Convection Sections

• Power Plant Economizers

• Petrochemical Reboilers

• Heat Recovery Boilers

• Heater Coils in Oil Refineries

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.