This fin offers a certain degree of atmosphere protection
Of the tube wall against corrosion .
The broad contact surface between the tube wall and the finning
Enhances heat transfer.This fin design is the most economical.
This fin is created by forming an aluminum strip into an
L-shape which is then tension wound around the primary tube .
Each L section is positioned against each other to ensure complete tube coverage.Also this manufacturing technology allows the use of relatively thin walled tubes.
