„L“-TYPE

The fin strip will be shaped in „L“ form and tension wound to the base tubes outer surface. The „L“ foot of the fin enhances the corrossion protection of the base tubes.

Max. working temperature: 150°C

Fin Materials: Aluminium and Copper

Base Tube Materials: No limits 

„LL“-TYPE

Same way produced like „L“-TYPE but the fin foot is overlapping and covers the base tube outer surface which increases the corrossion protection of the base tube compared to the „L“-Type.

Max. working temperature: 180°C

Fin Materials: Aluminium and Copper

Base Tube Materials: No limits

„KL“-TYPE

Produced same like „L“-TYPE but before application of fins the surface of base tube is knurled. The fin foot is knurled into the knurling to get a higher bond between tube and fins, resulting in better heat transfer parameters.

Max. working temperature: 260°C

Fin Materials: Aluminium and Copper

Base Tube Materials: No limits

„G“-TYPE

The fin strip is tension wound into a groove machined into the tube surface. Simultaneously the fin is fixed into the groove by back filling with material from base tube. Maximum heat transfer at high tube temperatures is ensured.

Max. working temperature: 400°C

Fin Materials: Aluminium, Copper and Carbon Steel

Base Tube Materials: No limits

Extruded Fin Tubes

This type of finned is produced by pushing a aluminium tube over a base tube. The fins are rolled from the outside of aluminium tube and the outer tube is pressed same time to the base tube. In addition to the excellent heat transfer the base is excellent protected from corrosion.

Max. working temperature: 285°C

Fin Materials: Aluminium

Base Tube Materials: No limits

Extruded and Serrated Fin Tubes

Produced same as Extruded Fin Tubes but fins are serrated. The already excellent heat transfer will be increased.

Max. working temperature: 285°C

Fin Materials: Aluminium

Base Tube Materials: No limits

Spacers

Different types of spacer are available on request.