Extruded Finned Tubes

Corrosion-resistant extruded finned tube solutions

Extruded Finned Tube Coils: Maximum Thermal Efficiency and Durability

Extruded finned tube coils are designed for demanding operating conditions and large temperature differences. Instead of attaching fins separately, they are cold-formed by extrusion from a bimetallic structure, usually an aluminium sleeve over a copper or steel tube. This manufacturing technique creates full mechanical contact and a continuous thermal bridge between fin and tube.

Heatmek’s extruded finned tubes have no gaps at the fin roots, reducing corrosion risk. The integrated fin structure prevents efficiency losses caused by thermal expansion and supports consistent long-term performance.

Technical Advantages of Extruded Finned Tubes

The main advantage of extruded finned tube coils over L, LL or G fin types is their resistance to external conditions. Their smooth, rigid fin surface simplifies cleaning and resists bending from mechanical impacts.

Excellent Heat Transfer: No air gap between tube and fin means minimal thermal resistance.
Corrosion Resistance: Aluminium fins completely cover the base tube, protecting it against atmospheric corrosion.
High-Temperature Resistance: Maintains shape and efficiency at operating temperatures up to 300°C.
Easy Maintenance: Suitable for high-pressure water or air cleaning without fins shifting or becoming damaged.

Applications and Industrial Use

Extruded finned tube coils are widely used in industries requiring high reliability and efficiency, particularly air-cooled condensers, oil coolers, power plant heat recovery units and chemical process lines.

Engineered by Heatmek, these coils provide a large heat transfer surface in limited space through compact design. This helps reduce energy intensity and total capital expenditure, or CAPEX, in large facilities.

For custom extruded finned tube solutions, contact the Heatmek engineering team.

Our Project Process

01. Requirements Analysis and Technical Assessment

We analyse your process conditions, fluid type and capacity requirements to determine the most suitable solution.

02. Engineering Design and Calculations

We size the product for your project through thermal and mechanical calculations and prepare its technical drawings.

03. Production Planning and Material Selection

We plan production and select materials suited to temperature, pressure and corrosion conditions.

04. Manufacturing and Assembly

We carry out fin winding, welding, bending and assembly at our facility in accordance with quality standards.

05. Testing, Inspection and Approval

We verify every product through pressure and leak tests before shipment.

06. Delivery and After-Sales Support

Following on-time delivery, we support you through commissioning and maintenance.

Product Photos

Frequently Asked Questions

01. What makes an extruded finned tube different?

Unlike wound fins, extruded fins are formed under pressure from an outer sleeve around the base tube. This makes the fin and tube act as one component, supporting efficient heat conduction.

02. Which materials are used for these coils?

The inner tube, which contacts the fluid, is generally manufactured from carbon steel, copper or stainless steel. The outer fins are typically aluminium for its high thermal conductivity.

03. Can fins be damaged during cleaning?

Extruded fins are more rigid and durable than other fin types. Their construction resists fins folding or separating from the tube during high-pressure cleaning.

THE RIGHT HEAT TRANSFER
FOR YOUR PROJECT.