G Finned Tubes

Aluminium fin strip is wound & embedded on a groove and securely locked by closing the groove with the base tube metal. This ensures maximum heat transfer at high temperatures.

Maximum Operating temperature for G fin is 450 deg C.

Fin Material - Aluminium (or) copper

Tube Material - Carbon steel, Stainless steel, copper, Copper Alloys etc.

L Finned Tubes

Aluminium fin strip is formed to L shape and then tension wound to the base tube.

Maximum operating temperature for L fin is 150 deg C.

Fin Material - Aluminium (or) copper

Tube Material - No theoretical limit

KL Finned Tubes

This is manufactured similar to L fin except that the base tube is knurled before wrapping the 'L' shaped fin strip. After wrapping the fin strip, the fin foot is also knurled on the base tube to increase the bonding between the tube & fin. This will result in increased heat transfer performance.

Maximum Operating Temperature- 260 deg C

Tube Material - No theoretical limit.

Fin Material - Aluminium or copper

LL Finned Tubes

Aluminium fin strip is formed to L shape and tension wound on the tube with overlapping of fins as shown in the figure.

Maximum operating Temperature for LL fin is 180 deg C.

Fin Material - Aluminium or copper

Tube Material - No theoretical limit