'LL' Fin

'LL' Fin
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. Maximum operating temperature for this fin type is 180°C.
Fin material: Aluminium or copper.
Tube materials: No theoretical limits.
Production Capability
Profins utilise 2 different types of finning equipment whose capabilities are as follows.

McElroy finning equipment

Base tube O/D: From 5/8" (15.88mm) to 2" (50.8mm) Fin height : From 1/4" (6.35mm) to 1" (25.4mm) Fin pitch : From 5 fins per inch to 12 fins per inch(196 fins/metre to 473 fins/metre) Fin Thickness: From 0.012" (0.30mm) to 0.031"(0.76mm) Base tube material: Dependent on fin type Fin material: Aluminium or copper Fin types : L, LL, KL, G

Razmussen finning equipment

Base tube O/D: From 5/8" (15.88mm) to 4" (101 .6mm) Fin height : From 1/4" (6.35mm) to 1" (25.4mm) Fin pitch : From 2 fins per inch to 9 fins per inch (78 fins/metre to 351 fins/metre) Fin Thickness: From 0.012" (0.30mm) to 0.040" (1mm) Base tube material: Carbon / stainless steel or copper and copper based alloys Fin material: Carbon / stainless steel or copper based alloys Fin types : Semi Crimped

Category: Helically Wound High Fin Tubes
Related Category: Aluminum Finned Tube  Copper Finned tube  Fin Tube Coil  Medium high fin tube  Low fin tube