ASME SA249 TP304 Extruded Finned Tubes for Air Coolers

ASME SA249 TP304 extruded finned tubes are high-performance heat transfer components designed for air cooler applications where corrosion resistance, mechanical strength, and long-term operating stability are required.

The product uses ASME SA249 TP304 stainless steel as the base tube material, with an aluminum outer fin layer typically formed through an extrusion process. During manufacturing, the aluminum fin material is mechanically bonded onto the outside surface of the tube, creating a tight contact between the fin and tube wall.

This structure improves heat transfer efficiency while providing enhanced protection against environmental corrosion. These extruded finned tubes are widely used in air-cooled heat exchangers, industrial cooling systems, petrochemical plants, power facilities, and process equipment.

The extruded finned tube consists of:

• Inner tube: ASME SA249 TP304 stainless steel tube
• Outer fin: Aluminum alloy fin material (commonly AL1060/AL1100 depending on project requirements)
• Manufacturing process: Extrusion forming

During extrusion, the aluminum sleeve is mechanically expanded and compressed around the stainless steel tube surface. This creates a strong mechanical bond without relying on welding.

The integrated structure provides:

• Improved heat transfer performance
• Better resistance to atmospheric corrosion
• Reduced risk of fin loosening during operation
• Extended service life in outdoor air cooler environments

ASME SA249 TP304 extruded finned tubes are commonly applied in:

Used in refineries, chemical plants, and process industries where cooling fluids must exchange heat with ambient air.

Suitable for cooling:

• Hydrocarbon streams
• Process gases
• Condensates
• Lubricating oils

The stainless steel tube provides better resistance against moisture, oxidation, and mildly corrosive process environments.

Used in:

• Auxiliary cooling systems
• Condenser cooling equipment
• Industrial heat recovery systems

Applied in:

• Large-scale cooling units
• Condensing equipment
• Industrial ventilation systems

The following dimensions are commonly available depending on project requirements:

Customized dimensions can be produced according to air cooler design requirements.

ASME SA249 TP304 is an austenitic stainless steel grade mainly used for welded heat exchanger tubes.

Typical applications include:

• Heat exchangers
• Condensers
• Cooling systems
• Industrial process equipment