ASTM A269 TP321 High Frequency Welded Finned Tube with Carbon Steel Fins – Product Overview

High Frequency Welded Finned Tube (HF Welded Fin Tube) is an advanced heat transfer product designed for high-efficiency thermal applications. This model uses ASTM A269 TP321 stainless steel as the base tube and carbon steel as the fin material. The high-frequency welding process creates a strong, continuous metallurgical bond between the base tube and fins, delivering excellent heat transfer performance and long-term durability.

ASTM A269 TP321 + Carbon Steel Fins – Product Structure

• Base Tube: ASTM A269 TP321 seamless or welded stainless steel tube, providing excellent corrosion resistance and high-temperature strength.
• Fins: Carbon steel (CS) fins helically wound around the base tube.
• High Frequency Welding Process: The fins are continuously welded to the base tube using high-frequency resistance welding, ensuring a solid, low-resistance thermal bond without filler metal. This technology offers higher fin density and better mechanical strength compared to traditional embedded or extruded fin tubes.

ASTM A269 TP321 Base Tube Chemical Composition

Carbon Steel Fin Chemical Composition (Typical)

ASTM A269 TP321 + Carbon Steel Fins – Dimensional Tolerances

ASTM A269 TP321 High Frequency Welded Finned Tube – Performance Advantages

• Superior heat transfer efficiency due to high-frequency continuous welding
• Excellent corrosion resistance from TP321 stainless steel in oxidizing and high-temperature environments
• Strong mechanical bond between fins and tube, suitable for high-vibration and thermal cycling conditions
• Higher fin density possible compared with embedded fin tubes
• Cost-effective solution combining stainless steel corrosion resistance with carbon steel fin economy
• Long service life with minimal maintenance

ASTM A269 TP321 + Carbon Steel Fins – Detailed Application Fields

This product is widely used in the following industries:

• Petrochemical and oil refining heat exchangers
• Power plant boilers and economizers
• Air-cooled heat exchangers (ACHE)
• Waste heat recovery systems
• Chemical process equipment
• Marine and offshore heat transfer systems
• HVAC and industrial refrigeration units

Our Advantages and Experience – ASTM A269 TP321 High Frequency Welded Finned Tube Supplier

With more than 15 years of experience in manufacturing and exporting high-frequency welded finned tubes, we specialize in producing ASTM A269 TP321 base tube with carbon steel fins according to customer specifications. We maintain strict quality control following ASTM and ASME standards, offer customized dimensions, and provide complete material traceability and third-party inspection support. Our products have been successfully supplied to heat exchanger manufacturers and EPC contractors in over 30 countries.