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DELLOK Carbon Steel Welded Stainless Steel Longitudinal Fin Tube

1 piece
$10 ≥1 Piece/Pieces
DELLOK Carbon Steel Welded Stainless Steel Longitudinal Fin Tube
Features Gallery Product Description Request A Quote
Fin Edge: Smooth
Fin Height: 1.5mm
Fin Height Tolerance: +/- 0.2mm
Fin Number: 20
Fin Number Tolerance: +/- 1
Fin Pitch: 2.5mm
Fin Pitch Tolerance: +/- 0.2mm
Fin Shape: Rectangular
Fin Surface: Plain
Fin Thickness: 0.2mm
Fin Thickness Tolerance: +/- 0.02mm
Finned Type: Longitudinal Finned Tube
Material: Stainless Steel
Tube Diameter: 25.4mm
Tube Length: 1000mm
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Carbon Steel Longitudinal Fin Tube


Stainless Steel Longitudinal Fin Tube

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

DELLOK Carbon Steel Welded Stainless Steel Longitudinal Fin Tube



About Us


Dellok(YONGHUI Radiating Pipe Manufacturing Co.,Ltd) was established in 2002, which is located in Nanjing, China.We joined HARBIN AIR CONDITIONING CO., LTD. in 2022 and became the most professional industry manufacturer in 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.



Longitudinal Finned Tube Product Description:

Welded Longitudinal Finned Tubes are produced by resistance welding fins in the longitudinal direction along the length of the tube. The fin strip is first formed into a U-shaped channel, such that each leg of the U will form a fin. The channels are cut to the appropriate length and then oriented along the length of the tube and resistance welded in place. The channels are welded in pairs, diametrically opposed — therefore the number of fins specified must always be a multiple of four.

For a given pipe or tube size, the desired heat transfer surface area per unit length of tube can be obtained by specifying the appropriate fin height and number of fins. The maximum number of fins is dependent upon the tube outside diameter — larger OD tube can accommodate a greater number of fins.


Longitudinal Finned Tube



Longitudinal Fin Tube Manufacturing Process:

The longitudinal I/L or U fins are welded onto the base tubes by resistance welding or welding with filler metal. U-Bend tubes with LFW, Fins also possible.


Welded Steel Pipe



Longitudinal Fin Tube(Carbon Steel Welded Pipe) Advantages:

1. Longer working life than others ordinary welding helical fin tubes.

2. Much safer and energy saving.

3. Increase the heat transfer rates for viscous liquids.

4. Perforated fin type used whenever drainage of liquid from fin channels become a problem.

5. Longitudinal fin tubes are widely used in horizontal heat exchangers.



Carbon Steel Welded Pipe



Brown Fin Tube Properties:

Improve heat transfer efficiency in efficient space.

Reduces installation space on required heat transfer surfaces.

Reduce the cost of the equipment, and have a high operational reliability.

The pressure drop on the side of the tube is reduced and the operation cost is reduced.

The stiffness of steel tube is improved, and the seismic performance of steel tube is improved.

Enhance heat transfer, reduce flow resistance and metal consumption.


Fin Tube



Longitudinal Finned Tube(Welded Steel Pipe) Applications:

1. Chemical-,petrochemical-,oil-,and power industry

2. Heat exchanges

3. Fired heaters

4. Gas coolers and heaters

5. Tank heaters.



Longitudinal Fin Tube



Longitudinal Finned Tube Specifications:


Product Specification
Tube OD 16~273 (mm) 3/8”~10”(NPS)
Tube Wall Thk 2.11~25.4 (mm) 0.08”~1”
Tube Length ≤12,000 (mm) ≤39 ft
Fin Thk 1.0~1.5 (mm) 0.04”~0.06”
Fin Height 5~25 (mm) 0.2”~0.98”
Fin Pitch 1U~36U
Fin Type “U”or“I/L”
Material Combinations
Fin Material C.S. (most common grade: Q235B)
S.S. (most common grade are AISI 304, 316, 409, 410, 321,347)
Tube Material C.S. (most common grade: A106 Gr.B)
S.S. (most common grade are TP304,316, 321, 347)
A.S. (most common grade are T/P5,9,11,22,91)




Brown Fin Tube

Product Categories : Longitudinal Finned Tube





Q1: Are you trading company or manufacturer?

A: We are manufacture factory and we can accept OEM order. Welcome to visit our factory and check our products.


Q2: Can I have a sample ?

A: Yes, welcome to place sample order to test and check quality. Mixed samples are also OK.


Q3: What is your the lead time for production?

A: Generally Sample needs 1-3 days, mass production needs 15-30 days, also depends on your request.


Q4: What is the warranty for your products?

A :We provide one year warranty for the products.


Q5: What payment terms do you accept?

A :Trade assurance,TT,Western Union.

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