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DELLOK Stainless Steel L Finned Tube For Air Conditioner / Heat Exchanger

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Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.

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DELLOK Stainless Steel L Finned Tube For Air Conditioner / Heat Exchanger

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Brand Name :	DELLOK Yonghui
Model Number :	KL/LL/L Finned Tube
Certification :	ISO90001
Price :	$10 - 100 /Piece/Pieces
Payment Terms :	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :	10000 Piece/Pieces per Month
Delivery Time :	1-3 weeks

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Product Details
Company Profile

DELLOK Stainless Steel L Finned Tube For Air Conditioner / Heat Exchanger

Stainless Steel L Type 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.}

L/LL/KL Finned Tube Product Description

^{- L Finned
Tube(Wrap-On Fin)}

^{The Wrap-On (W/O) Fin or “L” footed fin is characterized as an L
fin and is widely used throughout the world. This fin is considered
an interference fit type fin and is limited to light duty.
Typically this fin is produced out of aluminum or copper fin strip.
This fin type is not suitable for carbon steel or stainless steel
fin materials as the material is too hard for the formation of the
characteristic L foot. The foot of the fin is formed by pulling the
strip through a two stage preformer set. The first stage rolls the
fin to a 45-degree foot and the second stage rolls it to a true
90-degree foot. The tooling controls the fin height as specified.
As a result of this, each combination of FPI (pitch) and fin strip
thickness requires a specific strip width.}

^{- LL Finned Tube(Overlapped Footed Fin)}

^{The Overlapped Footed Fin (OLFF) is characterized as a double LL
fin and is widely used throughout the world as an alternative to
the extruded fin. This fin is considered an interference fit type
of fin and is used in corrosive applications where protection of
the base tube is required. The double LL coverage of the base tube
represents a double strip thickness coverage of the base tube.
Typically, this fin is produced out of aluminum or copper fin
strip. This fin type is not suitable for carbon steel or stainless
steel fin materials as the material is too hard for the formation
of the characteristic LL foot. The foot of the fin is formed by
pulling the strip through a two stage preform roller set. By
preforming the foot of the fin into a “joggle” or a one thickness
offset, it is possible to take advantage of the ability to place
the heel of one fin on the toe of the adjacent fin. The preformers
preform the foot to allow the fins to fit together on the surface
of the tube, for continuous contact with the base tube and forms a
seal to protect the base tube from atmospheric corrosion.}

^{- KL Finned Tube(Knurled
Aluminum Tubing)}

^{The Knurled Footed Fin is characterized as adding increased tube
and fin surface area due to the knurled surface on the fin foot and
tube. The fin is consider an interference fit type fin and because
of the knurls some heat transfer specialist give the fin added
performance ratings due to a mechanical type bond of the fin
material to the tube wall surface. Typically, this fin is produced
out of aluminum or copper fin strip. This fin type is not suitable
for carbon steel or stainless steel fin materials as the material
is too hard for the formation of the characteristic L or LL foot.
Knurling depth in the tube wall is affected by the hardness of the
tube material chosen. The fin, whether W/O or OLFF, is formed using
standard fin height hardware.}

Aluminum Finned Tubes

L/LL/KL Finned Tube(Knurled Aluminum Tube) Manufacturing Process

^{Applied Fin Tube is made with strip wrapped under tension around the base of the
tube. Fins are welded to the base tube at the strip ends.}

L/LL/KL Finned Tube(Aluminum Finned Tubes) Advantages

^{Core tube extensively protected against corrosion by the fin foot,
finning of very thin-walled tubes possible.}

L LL KL Finned Tube

L/LL/KL Finned Tube Properties

^{Atmospheric Corrosion Resistance: OK}

^{Mechanical Resistance: Poor}

^{Fin Contact: Interference Fit}

^{Fin To Tube Bond :Moderate}

^{Heat Transfer Efficiency :Moderate}

L/LL/KL Finned Tube Applications

^{-the petroleum, chemical and petrochemical process industries}

^{-natural gas treatment}

^{-the steel industry: blast furnace and converter 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, etc.}

FAQ

^{Q: 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.}

^{Q: What is the warranty for your products?}

^{A :We provide one year warranty for the products.}

^{Q: What payment terms do you accept?}

^{A :Trade assurance,TT,Western Union.}

^{Q: What are the modes of transportation of machines?}

^{A: Air freight, sea freight express delivery, etc. We will choose
the most suitable transportation method according to your
requirements.}

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