Finned Tubes 


 

'L' FINNED TUBE
'L' Finned Tune
The strip material is subjected to controlled deformation under tension giving the optimum contact pressure of the foot of the fin onto the base tube thus maximizing the heat transfer properties. The foot of the fin considerably enhances the corrosion protection of the base tube. Max. operating. temp. 150ºC.
MAXIMUM WORKING
TEMPERATURE

ATMOSPHERIC CORROSION
RESISTANCE

MECHANICAL RESISTANCE

FIN MATERIALS

TUBE MATERIALS
150°C


ACCEPTABLE


POOR

ALUMINIUM, COPPER

ANY THEORETICAL LIMIT
'G' EMBEDDED FINNED TUBE
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. Max. operating temp. 450ºC Embedded finned tubing offers exceptional thermal efficiency at higher temperature ranges with solid fin-to-tube contact. Fins are mechanically locked into a helical groove in the outside of the tube. Rollers press displaced metal from the groove against the base of the fin to form a lasting metal-to-metal bond.
MAXIMUM WORKING
TEMPERATURE

ATMOSPHERIC CORROSION
RESISTANCE

MECHANICAL RESISTANCE

FIN MATERIALS


TUBE MATERIALS
400°C


POOR


ACCEPTABLE

ALUMINIUM, COPPER,
CARBON STEEL

ANY THEORETICAL LIMIT
'G' EMBEDDED FINNED TUBE
'KL' FINNED TUBE
'KL' FINNED TUBE
Manufactured exactly as the 'L' fin except that the base tube is knurled before application of the fin foot. After application the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between the fin and tube resulting in improved heat transfer characteristics. Max. operating. temp. 260ºC.
MAXIMUM WORKING
TEMPERATURE

ATMOSPHERIC CORROSION
RESISTANCE

MECHANICAL RESISTANCE

FIN MATERIALS

TUBE MATERIALS
260°C


ACCEPTABLE


ACCEPTABLE

ALUMINIUM, COPPER

ANY THEORETICAL LIMIT
EXTRUDED FINNED TUBE
This fin type is formed from a bi-metallic tube consisting of an aluminium/copper outer tube and an inner tube of almost any material. The fin is formed by rolling material from the outside of the exterior tube to give an integral fin with excellent heat transfer properties and longevity. Extruded fin offers excellent corrosion protection of the base tube. Max. operating. temp. 280ºC.
     Extruded fin tubes are formed helically out of a bi-metal or single walled mono-metal tube.
MAXIMUM WORKING
TEMPERATURE

ATMOSPHERIC CORROSION
RESISTANCE

MECHANICAL RESISTANCE

FIN MATERIALS

TUBE MATERIALS
285°C


EXCELLENT


EXCELLENT

ALUMINIUM

ANY THEORETICAL LIMIT
EXTRUDED FINNED TUBE
'LL' FINNED TUBE
'LL' FINNED TUBE
Manufactured in the same way as the 'L' fin type except that the fin foot is overlapped to completely enclose the base tube thereby giving excellent corrosion resistance. This type of tube is often used as an alternative to the more expensive extruded type fin in corrosive environments. Max. operating. temp. 180ºC.
MAXIMUM WORKING
TEMPERATURE

ATMOSPHERIC CORROSION
RESISTANCE

MECHANICAL RESISTANCE

FIN MATERIALS

TUBE MATERIALS
180°C


ACCEPTABLE


POOR

ALUMINIUM, COPPER

ANY THEORETICAL LIMIT