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

Seamless Solid Fin Tube

Carbon Fin Strip Seamless Pipe

TP347H Stainless Steel Seamless Pipe

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