dtfinnedtube.com
What are LL Fin Tubes?
LL finned tubes are a type of heat exchange element made by winding process. Its characteristic is that the root of the fin completely covers the outer surface of the base tube to enhance the heat exchange effect and improve corrosion resistance.
LL Fin Tubes Structural Features
The fins of LL finned tubes are L-shaped and spirally wound on the outer wall of the base tube under tension. The root fits tightly with the outer surface of the base tube to form a seamless connection. This structure can effectively reduce the contact thermal resistance and improve the heat exchange efficiency.
LL Fin Tubes Materials and Performance
Material: Common materials include carbon steel, stainless steel, 銅, aluminum, etc., which can be selected according to specific working conditions.
Corrosion resistance: Bimetallic composite structure (such as copper/steel) can improve corrosion resistance, and the working temperature can reach 170°C.
Applicable scenarios: Applicable to boilers, industrial waste heat recovery, air conditioning and refrigeration, 等. where heat transfer needs to be enhanced.
LL Fin Tubes production process
High frequency welding or tension winding process is used, in which the tension winding process winds the fins on the base tube through mechanical or hydraulic devices, with high bonding strength and high degree of automation.
