Seamless Heating Extruded Fin Tube ASTM A179 Lightweight

An extruded finned tube is a type of heat exchanger tube where fins are mechanically bonded to the outer surface of a base tube through an extrusion process. This design significantly increases the tube's surface area, improving heat transfer efficiency in applications involving air or gas cooling/heating.

• Base Tube Selection: Typically made of carbon steel (e.g., ASTM A179), stainless steel, or other alloys.
• Fin Material: Common choices include Aluminum 1060 (Al1060) for lightweight and corrosion resistance.
• Extrusion Process: The pressure and rotation mechanically bond the fin to the tube, creating a seamless, high-strength connection without soldering or welding.

• Strong Bond: The fins are integrally attached, reducing the risk of loosening under thermal cycling
• High Heat Transfer Efficiency: More surface area = better heat exchange
• Lightweight (if aluminum fins are used)
• Corrosion-Resistant (if aluminum or stainless steel is used)

• Better heat transfer than wrapped or L-footed fins
• More durable than bonded fins (no adhesive failure risk)
• Suitable for high-temperature cycling (unlike soldered fins)

Material: Low-carbon steel (seamless cold-drawn tubes)

• Cold-drawn seamless tubes: Improved surface finish and dimensional accuracy
• High ductility (≥35% elongation) for bending/flaring without cracking
• Moderate strength: Suitable for low/medium-pressure heat exchangers
• Good thermal conductivity
• Corrosion resistance in certain environments
• Suitable for moderate-temperature applications (e.g., boilers, condensers, heat exchangers)

• Excellent thermal conductivity (better than stainless steel)
• Cost-effective vs. alloy tubes
• Compatible with aluminum fins (extrusion-friendly)