dtfinnedtube.com
KL type Fin Tube for Heat Exchanger
KL type fin tube same as L fin tube,except that the base tube is knurled before application of the fin foot.Also named Wrap On Knurled type fin tube.After application,the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between fin and tube,Resulting in improved heat transfer efficiency.
Maxumum working temperature:500 F (260 C)
Base tube material:
stainless steel, carbon steel, copper alloy,alloy steel (No theoretical limit)
ASME SA213/ASTM A213 TP304/304L TP316/TP316L TP321 TP310S TP317,
ASME SA106/ASTM A106 Gr B Gr C,ASME SA179/ASTM A179,ASME SA192/ASTM A192
ASTM B111 C70600 C44300 C68700 C71500…
Fin material: Aluminium,copper.
Stainless steel KL Type fins tube, carbon steel KL Type fins tube copper KL Type fins tube
Cu-Ni KL Type fins tube,Aluminium brass KL Type fins tube Copper-nickel KL Type fins tube Duplex KL Type fins tube super duplex KL Type fins tube Air cooler fins tube, Air pre-heater fins tube.
Extruded fins tube Serrated fin tubes L Type fins tube G Type fins tube LL Type fins tube H Type fins tube KL Type fins tube HFW fin tube laser welded fin tube.
Base pipe O.D:15.88-165mm
Fin height:6-50mm
Fin thickness:0.3-0.5mm
Fin pitch: as customer’s request.
End:Plain Ends, Beveled Ends
No fin area on both side:As Customer’s request.
Application:
Air Cooler fins,Charge Air Chiller, Condenseur,Evaporator, Fluid Cooler, Gas Cooler,Oil Cooler, Radiateur, Refrigeration,Steam to Air Heat Exchanger etc.
Condensador, vaporizador parte, intercambiadores de calor , intercambiador de calor, tubo carcasa intercambiador de calor, Recipientes a presion, etc
Package:
In bundles, plywood cases, wooden cases with water-proof package, etc.
Datang 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.
| G-fin | L-fin |
|---|---|
 |
 |
| LL-fin | KL-fin |
|---|---|
 |
 |
Extruded finned tubes are bimetallic tubes whose outer aluminium surface is finned by cold plastic deformation.
| EXTRUDED-fin |
|---|
|
|
Fin Material – Extruded-fin Finned Tubes
| Fin Material – Extruded-fin Finned Tubes | ||
|---|---|---|
|
Fins
|
SB209 – B209 Aluminium Alloy 1050 or 1060
|
SB75 – B75 Copper
|
For different materials please contact our technical office.
Fin Material – G-fin; L-fin; LL-fin; KL-fin Finned Tubes
| Fin Material – G-fin; L-fin; LL-fin; KL-fin Finned Tubes | ||
|---|---|---|
|
Fins
|
SB209 – B209 Aluminium Alloy 1050 or 1060
|
SB75 – B75 Copper
|
For different materials please contact our technical office.
Tube Material – G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
| Tube Material – G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes | ||||
|---|---|---|---|---|
|
Tube
|
SA179 – A179 Carbon Steel
|
SA213 – A213 | SA249 – A249 – Inox
|
SB75 – B75 Copper
|
SB111 – B111 Copper Alloy
|
For different materials please contact our technical office.
Technical Specifications – G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
| Technical Specifications – G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes | |||
|---|---|---|---|
|
Fin Types
|
Working Temp.
|
Resistance
|
|
|
Corrosion
|
Mechanical
|
||
|
Extruded
|
280 ÷ 300 °C
|
↑↑
|
↑↑
|
|
L-Fin
|
135 ÷ 155 °C
|
↑
|
↓↓
|
|
LL-Fin
|
155 ÷ 165 °C
|
↑
|
↓
|
|
KL-Fin
|
165 ÷ 185 °C
|
↑
|
↑
|
|
G-Fin
|
380 ÷ 420 °C
|
↓
|
↑
|
Inspections and Tests
G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
- Chemical Composition
- Mechanical Properties
- Hydrostatic Test
- Pneumatic Test
- Boroscopic Inspection
- Eddy Current Test
- Tensile Test (only for bimetallic tube)
U-Bent Embedded-fin or Extruded-fin Tubes for Air Coolers
Air Cooler Heat Exchangers need several welding on tube extremity, so a potential solution for simplifying assembly could be bending embedded-fin or extruded finned tubes.
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:
- Heat exchangers for power plants (electric, nuclear, thermal and geothermal power plants)
- Steam condensate systems
- Chemical and petrochemicalindustry
- Food processing plants and refrigeration technology
- Industrial (steel mills, incinerators, gas compression facilities).
