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DELLOK Extruded Finned Tube Fin Evaporator Cooling Fins

1 Piece
$20 - 100 /Piece/Pieces
DELLOK Extruded Finned Tube Fin Evaporator Cooling Fins
Features Gallery Product Description Request A Quote
Extrusion Pressure: 0.2-0.8Mpa
Extrusion Process: Direct Extrusion/Indirect Extrusion
Extrusion Speed: 0.1-2.0m/min
Extrusion Temperature: 280-350℃
Fin Height: 2.5mm-25mm
Fin Spacing: 2.0mm-20mm
Fin Thickness: 0.1mm-2.0mm
Fin Type: Louver Fins/Plain Fins/Perforated Fins
Length: 100mm-6000mm
Material: Aluminum/Copper/Stainless Steel
Surface Treatment: Anodizing/Polishing/Sandblasting
Tolerance: ±0.1mm
Tube Diameter: 6mm-159mm
Tube Thickness: 0.3mm-3.0mm
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Basic Infomation
Place of Origin: China
Brand Name: Dellok Yonghui
Certification: ISO90001
Model Number: Extruded Fin Tube
Payment & Shipping Terms
Packaging Details: wooden box
Delivery Time: 1-3 weeks
Payment Terms: T/T, D/A, L/C, D/P, Western Union, MoneyGram
Supply Ability: 10000 Piece/Pieces per Month
Product Description

DELLOK Extruded Finned Tube Fin Evaporator Cooling Fins



About Us


DELLOK (YONGHUI RADIATING PIPE MANUFACTURING CO.,LTD.) was established in 2002, which is located in Jiangsu, China. After many years of development, the company now has 66 million yuan in fixed assets, more than 200 employees, and 33 technical staffs. We have 4 aluminum processing production lines, with the annual processing capacity of more than 20,000 tons; And we have 5 tube-drawing production lines; 47 fintube production lines, 1 imported production line from American with the brand of McElroy , with the annual production capacity of 12 million meters the above. Quality is the theme of eternal pursuit of winner -Production workshop- Meticulous works, standardized management system and systematic quality assurance are Dellok(YONGHUI)'s best commitment to quality. In Dellok(YONGHUI), the quality control is not only the detection of the final process, but throughout the entire production process. We implement a set of quality control and assurance systems. Each batch of pipes is sampled and tested, and records are kept as a quality guarantee for the final product.



Product Description:


Murphy exports Extruded Finned Tube which are manufactured by cold rotary extrusion process. The Extruded Fin is formed from an outer aluminium tube with a large wall thickness, which is aligned over an inner base tube. The two tubes are pushed through three arbors with rotating discs that literally squeeze or extrude the aluminium fins up and out of the muff material in a spiral shape in one operation. The process of extrusion hardens the fins and prevents dissimilar metal contacts at the fin root. The exposed external surface is aluminium and there are no minute gaps between adjacent fins where moisture can penetrate. This ensures good efficiency that is expected when using an extended surface for heat transfer. During the finning process a tight mechanical bond is made between the finned aluminium outer tube and inner base tube of the required metal.


Extruded Aluminum Tubing


Manufacturing Process:


The Extruded Fin Tube are produced by compressing an aluminum tube, or sleeve, onto the base tube. The bloom is exposed to very high pressures which essentially "grows" the fins into the final fin profiles.This process manufacture an excellent strong joint with great resistance (fin stiffness) as well as exceptional heat transfer capabilities (longevity, temperature range). The advantage of extruded fin tubes are full protection of bare tube against corrosion and fin has high mechanical strength. Extruded finned tubes provide the most stable performance over time as compared to the other fin types. The fin is rolled from an outer aluminum tube by a process using pressure to create a rolled "pressure bond" between the liner tube and fins. The aluminum fin material completely encloses the tube, except at the ends where a tube coating can be applied.



Extruded Fin Tube



Extruded Fin Tubes Advantages


Relative thin wall core tubes can be used.

Excellent heat transfer performance (100% contact between tube and fin).

Excellent atmospheric corrosion (complete coverage of the core tube).

Airtight fin to tube bond.

Robust fins resist mechanical damage.

Can be cleaned with high pressure water/steam.

Fin Contact: Interference fit with mechanically solid pressed bond.

Maximum Tube Wall Operating Temperature:300°C.

Type of Service: Medium temperature, severe atmospheric corrosive environment.



Extruded Finned Tube





Cold Extrusion is the manufacturing process.

Excellent Fin-to-Tube Bond

Excellent Heat Transfer Efficiency

Mechanical Resistance: Excellent (as a result, unlike other fin tubes, it can be cleaned often with high-pressure jets). As a result, downtime is reduced and total life is increased.)

Corrosion Protection: Because it completely covers the base tube, it provides excellent corrosion protection (except bare ends).

Temperature Range: Up to 300 degrees Celsius



Extruded Fin Tubes



Aluminum Extruded Tubing Applications:

the petroleum, chemical and petrochemical industries

natural gas treatment

the steel industry: blast furnace and converter cooling systems

power generation: steam turbine exhaust condensing

– contact condensing with cooling of circulating condensate

– fossil and nuclear power plants

air conditioning (freon, ammonia, propane)

incineration of household refuse

compressor coolers, ect.



Extruded Aluminum Tube



extruded Aluminum Tube Specifications


Product Specification
Tube OD 10~51 (mm) 0.4”~2”
Tube Wall Thk 1.65~3.0 (mm) 0.065”~0.118”
Tube Length ≤18,500 (mm) ≤60.7 ft
Fin Thk 0.3~1.2 (mm) 0.012”~0.047”
Fin Height 5~16 (mm) 0.2”~0.63”
Fin Pitch 100~555 (mm) 3~14 FPI
Fin Type Extruded
Material Combinations
Fin Material Aluminum (most common grade:
Alu.1100, Alu.1060, Alu. 6063)
Tube Material C.S. (most common grade: A179, A192,SA210 GrA1/C,A106 Gr B )
S.S. (most common grade: TP304, 316, 321, 347,A789
Copper (most common grade:
UNS12200,14200, 70600, CuNi70/30, CuNi 90/10)
Titanium (most common grade: B338
Applied Temperature 300°C
Type of Service Medium temperature, severe atmospheric corrosive environment.







1. What Does Fin Tube Mean?

A fin tube is a tube that has small fins around the outside surface. These fins act as a filter and a mechanism to transfer heat from the material inside the tube to the outside space or vice versa. Fin tubes are used in applications that require a transfer of heat from a hot fluid to a colder fluid through the tube's wall. The rate at which such heat transfer occurs depends on three factors:

The temperature difference between the two fluids.

The heat transfer coefficient between each of the fluids and the tube wall.

The surface area to which the fluid is exposed.


2. Where is finned tube heat exchanger used?

Finned tube heat exchangers generally use air to cool or heat fluids such as air, water, oil or gas, or they can be used to capture or recover waste heat. These heat exchangers can used in a broad range of industries including oil & gas, power generation, marine and HVAC&R.


3. What is extruded fin tube?

Extruded finned tubes are bimetallic tubes whose outer aluminium surface is finned by cold plastic deformation. There are two major types of finned tubes available with us, single metal tubes (also called mono metallic fin tube) and Bimetallic tube (composite extruded fin tube) .


4. Why Aluminium is recommended as a fin material?

Good corrosion resistance, formability and high thermal conductivity make aluminium an ideal material for the construction of these heat exchangers. A typical brazed heat exchanger (radiator or condenser) comprises fins, tubes, sideplates and headerplates.

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Get in touch with us
Contact Person : Pax Yang
Tel : +862569521609
Fax : 86-25-6952-5709
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