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DELLOK API Standard Condenser Cuni 10 KL Heat Exchanger Fin Tube

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DELLOK API Standard Condenser Cuni 10 KL Heat Exchanger Fin Tube
Features Gallery Product Description Request A Quote
Tube OD:: 50.8mm Max.
Tube Length:: 18,000mm Max.
Fin Height:: 16.5 Mm Max.
Fin Thickness:: Generally 0.4mm ~0.6mm
Fin Pitch:: 2.1 Mm (12FPI) Min.
Daily Capacity: Up To 5000 Meters;
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Cuni 10 KL Heat Exchanger Fin Tube


12FPI Heat Exchanger Fin Tube


Cuni 10 KL Finned Tube Condenser

Basic Infomation
Place of Origin: China
Brand Name: DELLOK
Certification: CE. ISO,EN10204. 3.1 Cert.
Model Number: Type L fin tube / Tension wound fin tube
Payment & Shipping Terms
Packaging Details: (1)Steel frame case sealed by plywoods with each end capped; (2)Solid fumigated wooden box with each end of capped.
Delivery Time: Ex-work with 1 month on receipt of order.
Payment Terms: L/C, T/T Contact us for details
Supply Ability: 60000 meters month
Product Description
API Standard Condenser Cuni 10 KL Heat Exchanger Fin Tube
SA214 ERW Carbon Steel , OD25.4X1.5WT KL Type Aluminum Refrigeration Tube

Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot BlastingApplication of SA214 ERW Tubes: For high, middle, low pressure boiler and pressure purpose



Cuni 90/10 KL footed aluminum finned tubes with13 fins per inch


General specifications of L type fin tubes
Tube OD : 50.8mm max.
Tube Length : no limit.
Fin Height : 16 mm max.
Fin Thickness: generally 0.4mm ~0.6mm
Fin Pitch : 2.1 mm (12FPI) min
General L-type production capacity
Finning Facility: 7 finning machines;
Daily capacity up to 5000 meters;
Fin type: Solid plain


Manufacturing process

The fin strip (normally aluminum) is folded into an ‘L’ shape and wound on to the base tube surface under tension. The surface of base tubes must be knurled before tension.The feet of the fins are joined together and cover the finned surface.


Protection of Ends

Both bare ends of Knurled Footed Fin Tubes shall be Zinc or Aluminum metalized applied by an electro spray arc system coating.


Acceptance Criteria

API Standard 661(Air-Cooled Heat Exchangers for General Refinery Service) or the delivery conditions (TDC) of clients.


Quality Test

The Overlapped Knurled Footed Fin Tubes quality is assured by hydrostatic or pneumatic tests, eddy current tests and tensile tests in order to verify the mechanical bonding between inner and outer tubes.


Accessories of KL type fin tubes

Tube Support Box, Clamp or Spacer Box (Materials: Aluminum, Zinc or Stainless Steel).


Delivery condition

Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of Overlapped Knurled Footed Fin Tubes.

The desiccants are put into each package for continental transportation as well.



The common application fields are:

  1. Heat exchangers units for power plant(electric, nuclear, thermal and geothermal power plants);
  2. High corrosive systems (condensers, evaporators, sea water desalinations, fertilizing, urea systems, ammonia, gas, corrosive acids);
  3. The petroleum, chemical and petrochemical industries;
  4. The food processing and refrigeration industries;
  5. Natural gas treatment;

Competitive Advantage:

  1. We have more than 10,000 square meters workshop, including 7 finning machines, daily capacity up to 5,000 meters.
  2. The Knurled Footed Finning machines are designed and assembled by ourselves and we can offer you finning machines and all accessories etc...
  3. This method of manufacturing KL Footed Type enables us to place the finning on a very thin-walled tube with is particularly desirable when using high value alloys (titanium, stainless, copper, nickel).The tube can withstand a temperature of up to 150°C without the risk of atmospheric corrosion or thermal stress.
  4. KL TYPE fin tubes: the knurling process is strengthened the adhesion and reduce the tendency for fin loosening; and it is preferred when used in slightly more aggressive conditions. Maximum operating temperature: 250°C.
  5. After wrapped the fin strip, the fin foot is also knurled on the base tube to increase the bonding between tube and fin. For this reason, KL type of fin construction ensures better heat transfer characteristics than in the case of type L and LL.

DELLOK API Standard Condenser Cuni 10 KL Heat Exchanger Fin Tube 0DELLOK API Standard Condenser Cuni 10 KL Heat Exchanger Fin Tube 1DELLOK API Standard Condenser Cuni 10 KL Heat Exchanger Fin Tube 2


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Tel : +862569521609
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