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Help CenterKL Type Finned Tube, Knurled Finned Tubes
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KL Fin Tubes are also called knurled finned tubes. This finned tube is basically identical to the Wrap-On fin and produced with a combination of Wrap-On and Embedded. The fins are manufactured from a strip which is performed into an accurately controlled L shape similar to the L type, rolled into a taper which causes it to curl. It is then continuously helically wound under tension onto the tube. The fin wrapped around the tube. The base tube is knurled by a rotating tool, then the foot of the fin is knurled into the knurling of the base tube providing a tight bond with increased thermal performance. Providing the correct fin strip is used the foot of one fin butts up against the next fin and there is no gap between the fins. This gives some corrosion protection to the tube. The fins are secured at each end to prevent unwinding in a similar way as L fins.
The fin is wrapped around the tube and the foot is rolled into the outer surface of the pre-knurled tube and secured at each end. Gives good surface protection to the tube and improved heat transfer compared to the L or LL-type fin. KL -Foot tension wound finned tubes are commonly used in applications with metal Maximum Operating Temperature- up to 320°C (608°F)
Advantages of the KL Fin Tubing
- Tube protected against corrosion
- Medium temperature applications
- Increased fin-to-tube bond
- Greater thermal contact than standard L fin
- Added heat transfer performance due to the knurling
- Increased atmospheric corrosion protection of the core tube
- Good stability
- Resistant to vibrations
May be used at temperatures up to 320°C (608°F)
The unique combination of high thermal performance and stresses resistance with atmospheric corrosion protection
KL can favorably replace any type of finned tube.
The manufactured method is exactly as the L finned tube except that the base tubes are knurled before the application of these fin feet. 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.
Base Tube materials: Any material available, such as Carbon Steel/ Carbon Alloy Steel/Stainless Steel/ Nickel Alloys/ Copper/Copper Alloys/Titanium, A179, A192, A210, stainless tube A269/A213 T5 T11 T22 304 316
Tube Diameter:1/2" (12.7mm) to 2" (50.8mm)
Tube Wall Thickness:> 0.049" (1.244mm) depending on tube material and outside diameter
Fin Heights:1/4" (6.35mm) to 1" (25.4mm)
Fin Pitches:5 to 12 fins per inch
Fin Strip Thickness:0.012" (0.30mm) to 0.020" (0.50mm)
The fin is wrapped around the tube and the foot is rolled into the outer surface of the pre-knurled tube and secured at each end. Gives good surface protection to the tube and improved heat transfer compared to the L or LL-type fin. This finned tube is used for moderate-temperature cooling applications.
Upper-Temperature limit: 250°C
Tube Material: Any standard material we stock or is requested
Fin Material: Aluminium or Copper
In order to forward you a prompt offer we would be pleased to receive your detailed inquiry including:
• Base tube material
• Base tube size (OD x WT x Length)
• Fin material
• Fin type
• Fin diameter or height
• Fin thickness
• Fins per inch, meter, or fin pitch
• Lenght of plain, unfinned ends
• Finned Tube Quantity
(Additional fabrication, such as bending or welding the tubes into tubeplate or assembly)
Send Inquiry to This Supplier
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