Heat Transfer Surfaces

"G" Finned Tube

High conductivity fin tube ideal for high temperature applications up to 450℃.
ā€œGā€ fin have a helical groove formed in the tube surface with an uplift of metal each side which, when peened back into the fin, grips it securely. This ensures high heat transfer as well as producing a secure mechanical bond.
A wide range of both tube and fin materials are available.
Tube wall must be a minimum of 1.65mm. Groove depth up to 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 - 6.5 FPI (205 FPM)
Max. Tube Diam. - 38.1 mm (1.5")
Min. Tube Diam. - 15.88 mm (0.625")
Max. Tube Length - 15m (49 ft)


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 - 6.5 FPI (205 FPM)
Max. Tube Diam. - 38.1 mm (1.5")
Min. Tube Diam. - 15.88 mm (0.625")
Max. Tube Length - 15m (49 ft)


Base Tube Material

Carbon Steel, Stainless Steel, Copper, Copper Alloys.