ASTM A179 Extruded Finned Tube with B209 Al1100 Fins for Air-cooled Condensers

ASTM A179 Extruded Finned Tube with B209 Al1100 Fins for Air-cooled Condensers

Product Overview

Our ASTM A179 Extruded Finned Tube with ASTM B209 Al1100 Fins is a high-efficiency bimetallic heat transfer component engineered for superior thermal performance and long-term reliability. It integrates a robust ASTM A179 cold-drawn seamless carbon steel base tube with integrally extruded ASTM B209 Al1100 aluminum fins, delivering an optimal balance of mechanical strength, corrosion resistance, and thermal conductivity for demanding heat exchange applications.

Core Material Specifications

1. Base Tube: ASTM A179 (ASME SA179)

ASTM A179 – Chemical Composition (wt%)

ASTM A179 – Mechanical Properties (Room Temp.)

Why ASTM A179 is Better for Finned Tube Heat Exchangers

ASTM A179 is a cold-drawn low-carbon seamless steel tube specifically designed for heat transfer equipment. Compared with other common carbon steel tubes such asASTM A53, A106 Gr.B and stainless steel tubes, A179 shows unique advantages for extruded finned tube applications.

ASTM A179 adopts precision cold-drawn process, providing tighter OD & wall thickness tolerance, smoother inner and outer surface, which ensures perfect extrusion bonding with aluminum fins. A179’s lower hardness avoids fin detachment during high-pressure rolling, making it the most stable base tube for extruded finned tubes.

2. Fins: ASTM B209 Al1100

Material: Commercially pure aluminum (≥99.0% Al), conforming to ASTM B209.

Thermal Conductivity: ~240 W/m·K, 10–15 times higher than carbon steel.

Features: Outstanding formability, lightweight (2.7g/cm³), and good atmospheric corrosion resistance.

Manufacturing Process

• Tube Preparation: ASTM A179 seamless tubes are cleaned and inspected for surface defects and dimensional accuracy.
• Aluminum Sleeve Assembly: A thick Al1100 sleeve tube is tightly fitted over the base tube.
• Extrusion Forming: Using precision three-roller skew rolling, the aluminum sleeve is cold-extruded into integral fins, creating a metallurgical bond between tube and fins—eliminating contact thermal resistance.
• Finishing & Inspection: Cut to custom lengths, deburred, and tested for fin density, bond strength, and thermal performance.

Key Advantages of ASTM A179 Extruded Finned Tube with B209 Al1100 Fins

• High Thermal Efficiency: Integral fin design maximizes heat transfer area; Al1100’s high conductivity ensures rapid heat dissipation.
• Superior Bond Strength: Extruded construction prevents fin loosening or detachment under thermal cycling and vibration.
• Durability & Cost-Effectiveness: A179 base tube handles high pressure; Al1100 fins resist oxidation—reducing maintenance and replacement costs.
• Customization: Tailorable fin pitch, height, and tube length to fit air coolers, heat exchangers, and condensers.

Applications

• Power Generation: Air-cooled condensers, economizers, and waste heat recovery systems.
• Petrochemical & Refining: Process coolers, heat exchangers for oil/gas plants.
• HVAC & Refrigeration: Industrial chillers, finned coil units, and dry cooling systems.
• Industrial Heating: Heat recovery for furnaces, boilers, and manufacturing processes.

Why Choose Our Extruded Finned Tubes?

We combine strict material selection, precision manufacturing, and rigorous quality control to deliver finned tubes that outperform conventional welded or embedded fin types. Our ASTM A179 + Al1100 finned tubes ensure reliable, long-lasting heat transfer efficiency for your critical operations.