High fin tube

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High finned tubes are also called extruded tubes. The finning is achieved by extruding the fin from the tube.

This method of construction is very different from cutting grooves onto the tube as is often done by people who are on the lookout for a shortcut or who don’t know any better.

Extruded High fin tubes

Materials

Extruded tubes can be either from one piece or from 2 different materials (bimetallic).

  • Base tube: Carbon steel, Stainless steel, Copper, Cupro Nickel, Aluminium, Alloy Steel
  • Fin: Carbon steel, Stainless steel, Copper, Aluminium
  • Rings: Carbon steel, Aluminium, Hot dip galvanizing

Base tube diameters

Inchmm
5/8"
3/4"
1"
1 1/4"
1 1/2"
1 3/4"
2"		15,88
19,05
25,40
31,75
31,75
44,40
50,80

Fin-heights

Inchmm
3/8"
1/2"
5/8"		9,55
12,70
15,8

number of fins

fins per inchfins per meter
7
8
9
10
11
12		275
315
354
394
433
473

A High fin tube is formed by passing a tube through a set of rollers that form the fins from the parent material of the tube by making it flow in the desired way.

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