Be.Tube Srl offers different finned tubes: tension wound finned tubes, embedded finned tubes and extruded finned tubes.
Tension wound finned tubes are formed by winding a strip made of aluminium or copper around the tube under tension.
The strip winding technology provides different types of fins: L-Fin, LL-Fin, KL-Fin.
Embedded fins (G-Fins) are made by winding aluminium or copper strip into a helical groove machined on the outer surface of the tube.
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G-fin
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L-fin
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LL-fin
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KL-fin
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Extruded finned tubes are bimetallic tubes whose outer aluminium surface is finned by cold plastic deformation.
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Extruded-fin
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| Fin Material - Extruded-fin Finned Tubes |
| Fins |
SB209 - B209 Aluminium Alloy 1050 or 1060 |
SB75 - B75 Copper |
| Notes |
For different materials please contact our technical office |
| Fin Material - G-fin; L-fin; LL-fin; KL-fin Finned Tubes |
| Fins |
EN573-3 Aluminium Alloy 1050 or 1060 |
SB152 - B152 Copper |
| Notes |
For different materials please contact our technical office |
| Tube Material - G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes |
| Tube |
SA179 - A179 Carbon Steel |
SA213 - A213 Stainless Steel |
SB75 - B75 Copper |
SB111 - B111 Copper Alloy |
| Notes |
For different materials please contact our technical office |
| Technical Specifications - G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes |
| Fin Types |
Length |
Tube Diameter |
Thickness |
Finned Tube Diameter |
Fins Density |
| L-Fin |
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| (mm) |
(inch) |
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15,88 ÷ 50,8
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5/8” ÷ 2”
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| (mm) |
(BWG) |
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0,889 ÷ 3,76
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20 ÷ 9
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| (mm) |
(inch) |
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38,10 ÷ 76,20
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1 ½” ÷ 3”
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| (fins/m) |
(fins/inch) |
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236 ÷ 472
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6 ÷ 12
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| LL-Fin |
| KL-Fin |
| G-Fin |
| Extruded |
| Technical Specifications - G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes |
| Fin Types |
Working Temp. |
| Resistance |
| Corrosion |
Mechanical |
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| L-Fin |
135 ÷ 155 °C |
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| LL-Fin |
155 ÷ 165 °C |
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| KL-Fin |
165 ÷ 185 °C |
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| G-Fin |
380 ÷ 420 °C |
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| Extruded |
280 ÷ 300 °C |
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Inspections and Tests
G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
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Chemical Composition
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Mechanical Properties
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Hydrostatic Test
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Pneumatic Test
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Boroscopic Inspection
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Eddy Current Test
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Tensile Test (only for bimetallic tube)
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Applications - G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
Tension wound finned tubes, embedded finned tubes and extruded finned tubes are main devices for air coolers and the common application fields are:
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Heat exchangers for power plants (electric, nuclear, thermal and geothermal power plants)
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Steam condensate systems
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Chemical and petrochemical industry
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Food processing plants and refrigeration technology
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Industrial (steel mills, incinerators, gas compression facilities).
For any kind of information and request do not hesitate to contact
our Team, Be.Tube Srl is at Your complete disposal.
