As the only local manufacturer in Indonesia specializing in this field, Arezda’s Extended Surface Tubing Manufacturing Division offers a great variety of FINNED TUBES coming in combination of various kinds and sizes of tubes and fin materials with the types of fins required.

Our <INGI>® Products, being manufactured according to international specifications including those of ASME quality standards, have since been produced to meet the stringent rules of applications in the petroleum/oil & gas industries. Classification of <INGI>® extended surface tubing is as below:

KL Type (Wrapped-on Knurled Footed Fin) The "Knurled L-footed Fin” is similar to “L-footed Fin”, unless with greater design temperature. The foot of the fin is knurled simultaneously with the inner tubes, ensuring a tight contact between the fins and the inner tube. Max. Design Temperature: 320OC (608OF)

L Type (Wrapped-on Fin) The “L-footed Fin” is a circular fin wrapped under tension around the base tube. The feet of the fins cover the whole surface between fins. The L-foot provides a large contact area ensuring a good path for heat transfer from base tube surface to fin. Max. Design Temperature: 130OC (266OF)

LL Type (Overlapped Fin) The “Overlapped L-footed Fin” is fabricated with a relatively greater amount of fin material in the foot, ensuring full coverage of the base tube and prohibiting any contact of the ambient with the base tube. Max. Design Temperature: 180OC (356OF)

G Type (Embedded Fin) The “Embedded Fin” also referred to as applied fin, is a helically tension wound fin embedded in the base tube material by first ploughing a groove, followed by stretching the fin material into the groove and rolling the base material against the base to achieve a good fin to tube bond. Max. Design Temperature: 400OC (752OF)

Extruded Type (Bimetal Finned Tube) The “Extruded Fin” is made by covering the base tube with another aluminium tube. The fin-tube contact is obtained by cold extrusion operation of the aluminium by way of finning machine. Max. Design Temperature: 300OC (572OF)

d = O.D. of Tube     D = O.D. of Finned Tube     f = Fins Per Inch (FPI)     t = Fin Thickness

(High-Frequency ERW Fins)

  

Longitudinal

Compact

Serrated

Oval

etc. as per customer’s requirement.