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DELLOK Power Indudtry Welded Longitudinal Finned Tube

1 piece
$50 - 5000 /Piece/Pieces
DELLOK Power Indudtry Welded Longitudinal Finned Tube
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Connection Size: 1/4
Connection Type: Threaded
Fin Height: 3.0mm
Fin Material: Aluminum
Fin Number: 20
Fin Pitch: 3.2mm
Fin Surface: Plain
Fin Thickness: 0.2mm
Finned Type: Longitudinal
Material: Stainless Steel
Surface Treatment: Polishing
Tube Diameter: 6.35mm
Tube Length: 1000mm
Tube Material: Copper
Tube Wall Thickness: 0.5mm
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 Power Indudtry Welded Longitudinal Finned Tube



About us


Professional heat exchanger factory with 20 years of experience, providing you with one-stop heat transfer solutions to design different heat exchangers according to your purposes (metallurgy, food, petrochemical, pharmaceutical, beverage, wastewater, refrigeration, etc...)

Dellok Young is a professional manufacturer of various heat exchangers integrating R&D, design, production and sales. The heat exchangers produced are mainly used in petrochemical, electric power, papermaking, building heating, mining and other industries, such as air heaters, food industry plant protein powder, starch and other air heater spray drying systems.

The company now has a professional technical innovation team and professional after-sales personnel. The company's production plant covers an area of approximately 18,000 square meters, has multiple professional and advanced CNC and automated production equipment, and has obtained a number of professional certificates and patents.
The company has a professional foreign trade team and has trade cooperation with various regions. Some global partners conducted on-site inspections of the production plants and were very satisfied with the inspection results and established long-term strategic cooperative relationships with our company.


                 DELLOK Power Indudtry Welded Longitudinal Finned Tube 0



Longitudinal Finned Tube Product Description:

Like welded helical finned tubes, this welded configuration can be used for practically any heat transfer application, and is particularly suited to high temperature, high pressure applications with high fin-side temperatures. The choice of longitudinal finned tubes versus helical finned tubes seems to be governed mainly by geometric considerations. For example, some heater configurations consist of finned tubes inserted inside other tubes — longitudinal finned tubes are the obvious choice for such applications. In other cases, users prefer longitudinal finned tubes for installations where the tube will be oriented in a vertical direction — the fin orientation facilitates fluid drainage on the fin side of the tube. The longitudinal fin configuration is most commonly used in shell and tube type applications such as in double-pipe and multi-pipe heat exchangers where the longitudinal finned tube is telescoped inside the bore of a larger tube shell. Heat is transferred between the fluid passing through the bore of the finned tube and the fluid passing through the bore of the shell. Fluids passing through the bore of the shell are forced between the longitudinal fins. In this case, a helical fin would block the flow of the fluid, rather than allowing the fluid to run between the fins.

Longitudinal Finned Tube

Longitudinal Fin Tube Manufacturing Process:

The longitudinal I/L or U shape fins are welded onto the core plain tubes by resistance welding or welding with filler metal (Spot welded).

1. U bends tubes with longitudinal fins and Fin Tube Coils are available for requesting.

2. Longitudinal fins types: one-piece shape, standard U bent shape, cut & twist, perforated type etc…

3. The fin channels are welded to the tubes in opposite pairs. Fin height, number of fins and fin thickness can be specified.

4. Fins can be applied to either OD tube or NB pipe.


Brown Fin Tube


Longitudinal Fin Tube(Carbon Steel Welded Pipe) Advantages:

Increase of heat transfer rates for viscous liquids. Perforated fin type used whenever drainage of liquid from fin channels become a problem. Widely used in horizontal heat-exchangers.


Fin Tube


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:

Chemical-, Petrochemical-, Oil-, Power Industry,Heat-Exchangers,Fired Heaters,Gas Coolers and Heaters,Tank Heaters


Welded Steel Pipe




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)




Carbon Steel Welded Pipe

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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