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DELLOK Longitudinal Straight Seam Welded Finned Tube

1 piece
$20 - 1000 /Piece/Pieces
DELLOK Longitudinal Straight Seam Welded Finned Tube
Features Gallery Product Description Request A Quote
Fin Height: 1.5mm
Fin Number: 20
Fin Pitch: 3mm
Fin Shape: Rectangular
Fin Surface: Plain
Fin Thickness: 0.15mm
Fin Type: Longitudinal
Material: Stainless Steel
Tube Connection: Thread
Tube Diameter: 19mm
Tube End: Plain
Tube Length: 1000mm
Tube Material: Copper
Tube Surface: Polished
Tube Wall Thickness: 1.2mm
High Light:

Straight Seam Welded Finned Tube


Longitudinal Welded Finned 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: D/P, T/T, Western Union, MoneyGram, D/A, L/C
Supply Ability: TBD
Product Description


DELLOK Longitudinal Straight Seam Welded Finned Tube



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.


                DELLOK Longitudinal Straight Seam Welded Finned Tube 0



Longitudinal Finned Tube Product Description:

Longitudinal finned tubes are produced by welding the fins with resistance along the length of the tube. The fins first form a u-shaped channel, allowing each of the u-shaped legs to form a fin. The channel is cut to the appropriate length and then welded into place along the length of the tube and resistance. The channels are a pair of welded, polar opposites, so the number of fins specified must be a multiple of four.

For a given tube or tube size, the desired heat transfer surface area per tube unit length can be obtained by specifying the appropriate fin height and number of fins. The maximum number of fins depends on the outer diameter of the tube - the larger OD tube can accommodate more fins.


Longitudinal Finned Tube


Longitudinal Fin Tube Manufacturing Process:

The longitudinal fin tubes are welded onto the core plain tubes by resistance welding or welding with filler metal.



Carbon Steel Welded Pipe


Longitudinal Fin Tube(Carbon Steel Welded Pipe) Advantages:

Provide 8 to 12 times the heat transfer area of bare tubes.

Are more efficient than bare tubes.

Provide smaller exchangers due to increased Heat Transfer area.

Often provide a more economical selection.

Fins can be "Cut & Twist" to increase shell side fluid turbulence and improve heat transfer.


Welded Steel 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.


Longitudinal Fin Tube


Longitudinal Finned Tube(Welded Steel Pipe) Applications:

We supply longitudinal finned tubes for:

double pipe heat exchangers

multi-tube heat exchangers

fire rated heaters

gas coolers

tank heaters

And we are able to accommodate the requirements of various industries, including oil, power, chemical, and petrochemical.


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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