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.