L finned tube

“L” Finned tube

Economically produced fin tube for moderate working temperature up to 150ºC
“L” finned tube relies on maximum surface contact between fin and tube which is ensured by tension forming fin strip helically around the base tube.
A considerable degree of protection is given to the tube by the base of the fin.
We can also fin Nominal bore tube from 3/8” to 1 ¼”.

Manufacturing details

Aluminium “L” finned tube

Max. Fin Height       –  22.22 mm (0.875”)
Min. Fin Height        – 9.5 mm (0.375”)
Max. Fin Density      –  11 FPI (433 FPM)
Min. Fin Density        -  5.2 FPI (205 FPM)
Max. Tube Diam.      –  38.1 mm (1.5”)
Min. Tube Diam.       _ 12.7 mm (0.5”)
Max. Tube Length    – 15m (49ft)

Copper “L” finned tube

Max. Fin Height       –  19.05 mm (0.75”)
Min. Fin Height        – 6.35 mm (0.25”)
Max. Fin Density      –  11 FPI (433 FPM)
Min. Fin Density        -  5.2 FPI (205 FPM)
Max. Tube Diam.     –  38.1mm (1.5”)
Min. Tube Diam.       _ 9.5mm (0.375”)
Max. Tube Length   – 15m (49ft)

Base tube material

Carbon Steel, Stainless steel, Copper, Copper alloys, Titanium.

LL finned tube

“LL” Finned tube

Double “L” fin is used on applications requiring additional protection to the surface of the base tube. It is produced similar to “L” fin but has a wider fin base which is overlapped during the winding process.
Maximum operating temperature 175ºC.
We can also fin Nominal bore tube from 3/8” to 1 ¼”.

Manufacturing details

Aluminium “LL” finned tube

Max. Fin Height       –  22.22 mm (0.875”)
Min. Fin Height         – 6.35 mm (0.25”)
Max. Fin Density      –  15.8 FPI (622 FPM)
Min. Fin Density       – 8 FPI (315FPM)
Max. Tube Diam.      –  38.1 mm (1.5”)
Min. Tube Diam.       -  9.5 (0.375”)
Max. Tube Length    – 15m (49ft)

Copper “LL” finned tube

Max. Fin Height       –  19.05 mm (0.75”)
Min. Fin Height         – 6.35 mm (0.25”)
Max. Fin Density      –  12.4 FPI (488 FPM)
Min. Fin Density       – 8 FPI (315FPM)
Max. Tube Diam.     –  38.1mm (1.5”)
Min. Tube Diam.       -  12.7 (0.5”)
Max. Tube Length   – 15m (49ft)

Base tube material

Carbon Steel, Stainless steel, Copper, Copper alloys, Titanium.

KL Finned tube

“KL” Finned tube.

Economically produced fin tube for moderate working temperature up to 150ºC

“KL” finned tube relies on maximum surface contact between fin and tube which is ensured by tension forming fin strip helically around the pre knurled tube offering an improved bond and heat transfer.

A considerable degree of protection is given to the tube by the base of the fin.

We can also fin Nominal bore tube from 3/8” to 1 ¼”.

Manufacturing details

Aluminium “KL” finned tube  

Max. Fin Height       –  22.22 mm (0.875”)
Min. Fin Height        -  9.5 mm (0.375”)
Max. Fin Density      –  11 FPI (433 FPM)
Min. Fin Density        – 5.2 FPI (205 FPM)
Max. Tube Diam.      –  38.1 mm (1.5”)
Min. Tube Diam.       _ 12.7 mm (0.5”)
Max. Tube Length    – 15m (49ft)

Copper “KL” finned tube

Max. Fin Height       –  19.05 mm (0.75”)
Min. Fin Height         – 6.35 mm (0.25”)
Max. Fin Density      –  11 FPI (433 FPM)
Min. Fin Density       -  5.2 FPI (205 FPM)
Max. Tube Diam.     –  38.1mm (1.5”)
Min. Tube Diam.       _ 9.5mm (0.375”)
Max. Tube Length    – 15m (49ft)

Base tube material

Carbon Steel, Stainless steel, Copper, Copper alloys, Titanium.

G Finned Tube

“G”Finned tube

High conductivity fin tube for high temperature applications up to 450ºC.
“G” fin have a helical groove formed in the tube surface with an uplift of metal each side which, when peened back into the fin, produces a firm mechanical bond.
Tube wall must be a minimum of 1.65mm. Groove depth 0.3mm.
We can also fin Nominal bore tube from 3/8” to 1 ¼”.

Manufacturing details

Aluminium “G” finned tube

Max. Fin Height       –  22.22 mm (0.875”)
Min. Fin Height        -   9.5 mm (0.375”)
Max. Fin Density      –  13.5 FPI (531 FPM)
Min. Fin Density        _  5.2 FPI (205 FPM)
Max. Tube Diam.      –  38.1 mm (1.5”)
Min. Tube Diam.        – 15.88 mm (0.625”)
Max. Tube Length    – 15m (49ft)

Copper “G” finned tube

Max. Fin Height       –  19.05 mm (0.75”)
Min. Fin Height        -   6.35 mm (0.25”)
Max. Fin Density      –  12.4 FPI (488 FPM)
Min. Fin Density        _  5.2 FPI (205 FPM)
Max. Tube Diam.     –  38.1mm (1.5”)
Min. Tube Diam.        – 15.88 mm (0.625”)
Max. Tube Length   – 15m (49ft)

Base tube material

Carbon Steel, Stainless steel, Copper, Copper alloys.

Carbon Steel “G” Finned tube

Carbon Steel “G”Finned tube

Carbon Steel embedded fin

High conductivity fin tube for high temperature applications up to 450ºC.

“G” fin have a helical groove formed in the tube surface with an uplift of metal each side which, when peened back into the fin, produces a firm mechanical bond. Tube wall must be a minimum of 1.65mm. Groove depth 0.3mm.

Manufacturing details

Carbon Steel “G” finned tube

Max. Fin Height       –  19.05 mm (0.75”)
Min. Fin Height        –   9.5 mm (0.375”)
Max. Fin Density      –  9.5 FPI (374 FPM)
Min. Fin Density        _  5.2 FPI (205 FPM)
Max. Tube Diam.     –  38.1mm (1.5”)
Min. Tube Diam.        – 15.88 mm (0.625”)
Max. Tube Length   – 15m (49ft)

Wire Finned Tube

Wire Finned Tube

Wire finned tube is a high efficiency tube consisting of a series of elongated wire loops, spirally wound on to the tube wall and held in position with a binding wire at the base of the loops. The loops and binding wire are then soft soldered to the tube wall to give a metallic bond between the wire fins and the tube.

The loop density and wire diameter can be varied to give the optimum surface for specific heat transfer and pressure drop requirements.

The wire loop secondary surface gives these finned tubes excellent heat transfer characteristics because of its ability to promote turbulence in the fluid passing over it and thereby reducing the tendency for boundary layer formation.

Maximum operating temperature 250ºC.

Manufacturing Details

Maximum Fin Height – 0.75”(19.05mm)
Maximum Tube Diameter – 1.25”(31.8mm)
Base Tube Materials – Copper, Copper alloys, carbon steel, Stainless steel.
Standard Wire Material – Copper, Stainless steel.
Maximum Tube Length – 30Ft (9m)