Finned Tubes

GET A QUOTE

    Finned Tubes

    Type G Fin

    (Embedded Fin)The fin strip is wound into a machined groove and securely locked into place by back filling with base tube material. This ensures that maximum heat transfer is maintained at high tube metal temperatures. Maximum operating temperature for this fin type is 450°C.

    Fin material:Aluminium or copper
    Tube materials:Carbon steel, Cr.-Mo. steel, stainless steel, copper, copper alloys, etc.
    Type L Fin

    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 maximising the heat transfer properties. The foot of the fin considerably enhances the corrosion protection of the base tube. Maximum operating temperature for this fin type is 150°C.

    Fin material:Aluminium or copper.
    Tube materials:No theoretical limits.
    Type KL Fin

    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. Maximum operating temperature for this fin type is 260°C.

    Fin material:Aluminium or copper.
    Tube materials:No theoretical limits.
    Type 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.
    Type Semi Crimped Fin

    This fin type is a non taper fin wrapped under tension around the base tube. The finning process results in a crimp forming at the foot of the fin. Fin is then welded to the base tube at the strip ends. Maximum operating temperature for this fin type is 250°C.

    Fin material:Carbon/stainless steel or copper.
    Tube materials:Carbon/stainless steel or copper and copper alloys.

     

    Type Extruded High Fin

    This fin type is formed from a bi-metallic tube consisting of an aluminium 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. Maximum operating temperature for this fin type is 280°C.

    Fin material:Aluminium.
    Tube materials:No theoretical limits.
    Type 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