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DELLOK G Type Embedded Fin Tube For Heat Exchanger

1 Piece
$10 ≥1 Piece/Pieces
DELLOK  G Type Embedded Fin Tube For Heat Exchanger
Features Gallery Product Description Request A Quote
Fin Height: 1.5mm
Fin Pitch: 2.5mm
Fin Thickness: 0.25mm
Fin Type: Louver Fins
Material: Stainless Steel
Surface Treatment: Polishing
Tube Connection Length: 50mm
Tube Connection Material: Stainless Steel
Tube Connection Size: M12
Tube Connection Type: Threaded
Tube Diameter: 6mm
Tube Length: 120mm
Tube Material: Copper
Tube Surface Treatment: Electroplating
Tube Wall Thickness: 0.5mm
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Aluminum Embedded Fin Tube


G Type Embedded Fin Tube

Basic Infomation
Place of Origin: China
Brand Name: Dellok Yonghui
Certification: ISO90001
Model Number: Embedded Fin Tube
Payment & Shipping Terms
Packaging Details: wooden box
Delivery Time: 1-3 weeks
Payment Terms: T/T, L/C, D/A, D/P, Western Union, MoneyGram
Supply Ability: 10000 Piece/Pieces per Month
Product Description


DELLOK G Type Embedded Fin Tube For Heat Exchanger



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.


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Product Description



The ‘G’Fin Tube is also known as Embedded Fin Tube. This type of fin tube widely finds acceptance where the requirement is for higher operating temperature and relatively lower corrosive atmosphere

The fins are manufactured by embedding the fin strip into a groove formed on the base tube. The Fin is allowed to be placed in the groove and then the back filling of the groove is carried out to ensure firm adherence of the fins to the base tubes. Because of the process this type of Fin Tube is also known as ‘G’ Fin tube or Grooved Fin Tube.

The grooving, fin stack inserting and the back filling processes are carried put simultaneously as continuous operation. Because of the back filling procedure the bond between the Fin material and the Base tube is one of the best. This ensures optimum Heat Transfer.



DELLOK  G Type Embedded Fin Tube For Heat Exchanger 1




G Finned Tube  Manufacturing Process


The manufacturing tool is made up of 2 non-cutting plates set at 90°to the axis of the base tube. The first plate effects a groove for metal spinning. The second directs the ribbon in the groove and sets the fin foot in the groove through pressure on the metal displaced for the groove. A similar plate made of tungsten carburetor allows us to manufacture G finned tubes with base tubes made of austenitic steel or exotic alloys.


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G Finned Tube Advantages 


High fin stability, excellent heat transfer, high operating temperature.

The fin/tube wall contact is constant because of the setting and makes it possible to use a wall temperature of up to 450°C.

The fin is set throughout its length and consequently does not unwind even when partially uprooted.

This kind of finned tube is one of optimum choices for having good effectiveness/cost ratio.



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G Finned Tube Specifications



Product Specification
Tube OD 19~51 (mm) 3/8”~2”
Tube Wall Thk 2.11~3.5(mm) 0.083”~0.138”
Tube Length ≤18,500 (mm) ≤60.7 ft
Fin Thk 0.3~0.5 (mm) 0.012”~0.02”
Fin Height 10~16 (mm) 0.394”~0.63”
Fin Pitch 100~433 FPM 3~11 FPI
Fin Type G
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)
Copper (most common grade:UNS12200,14200, 70600, CuNi70/30, CuNi 90/10)
Titanium (most common grade: B338Gr2)
Applied 400°C
Type of Service

High temperature




1. What is a fin tube?

Finned tubes are the main components of heat exchangers. They are a series of tubes where fins have been added on the outside to increase the contact area with the outside fluid, to exchange heat and between the fluid inside the tube and the fluid outside the tube.


2. Where are Fine Tubes products used?

Our main markets include the aerospace, oil and gas, nuclear, power generation, chemical process and medical device industries. However we are also developing products for emerging sectors like desalination, geothermal energy, sports and the automotive industry. We are continually innovating, so if you require tubing for other applications please get in touch and we’ll be happy to discuss your requirements.


3. What is an 'G' Fin Tube made of?

'G' Fin Tubes or Embedded Fin Tubes are made of two main components, Base Tube and Fin Strip material.We can supply the 'G' Fin Tubes in the following combinations of Base Tube and Fin Material:

Base Tube Material: Carbon Steel, Alloy Steel, Mild Steel, Stainless steel and tubes manufactured by ERW or Seamless Process

Fin Material: Aluminum, Copper.


5. How do you ensure a quality product?

We always put quality as the most important thing for customers, and we control the quality from raw material inspection, production checking to water pressure test and strength test. Also the third party can be authorized to check.

Incoming inspection report for bare tube & strip.

Mill test certification for bare tube

Mill test certification for fin

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