A179 G Finned Tube Embedded Fin for Industrial Heat Transfer

Embedded Finned Tubes – A179 Base Tube Material

Embedded finned tubes, also known as G-type finned tubes, are high-performance heat transfer components widely used in industrial heat exchangers. The product uses ASTM A179 seamless cold-drawn low-carbon steel as the base tube combined with aluminum fins that are mechanically embedded into the tube wall. This design significantly increases the external surface area, delivering superior heat transfer efficiency in air-cooled and gas-liquid applications.

Embedded Finned Tube Structure – A179 Base Tube Material

The tube consists of three main elements:

• Base Tube: ASTM A179 seamless cold-drawn low-carbon steel
• Fins: High-purity aluminum (typically 1100 or 1050 grade)
• Embedding Process: A helical groove is first cut into the outer surface of the base tube. The aluminum strip is then wound into the groove under high tension and the groove edges are peened over to lock the fin securely in place, ensuring excellent thermal contact and mechanical strength.

Chemical Composition – A179 Base Tube Material

Dimensional Tolerance Range – A179 Base Tube Material

Performance Advantages – A179 Base Tube Material

• Heat transfer efficiency increased by 8–12 times compared with bare tubes
• Operating temperature range: –40 °C to 350 °C
• Excellent mechanical bonding strength – fins remain secure under vibration and thermal cycling
• Low air-side pressure drop
• Corrosion resistance enhanced by aluminum fins on carbon steel base
• Long service life with minimal maintenance

Detailed Application Fields – A179 Base Tube Material

• Air-cooled heat exchangers in petrochemical plants
• Power plant condensers and economizers
• Refinery process heaters and waste heat recovery
• Natural gas processing and LNG liquefaction units
• Industrial drying and HVAC systems
• Chemical reactors and distillation columns
• Offshore and marine heat transfer equipment

Our Advantages and Experience – A179 Base Tube Material

With over 15 years of specialized manufacturing experience, we supply embedded finned tubes that strictly comply with ASTM, ASME, and EN standards. All base tubes undergo 100% eddy current and hydrostatic testing. Our in-house finning lines guarantee precise groove depth and uniform fin embedding. We offer full material traceability, third-party inspection (SGS, BV, TUV), and customized solutions including different fin densities and protective coatings. Our products have been successfully installed in more than 200 projects across 30 countries, delivering reliable performance and high customer satisfaction.