Murphy Thermal Energy Co., Ltd.
Brand: Murphy
Applicable Industry: Manufacturing Plant, Food &Amp; Beverage Factory, Construction Works, Energy &Amp; Mining, Other
Out-of-warranty Service: Video Technical Support, Online Support
Where To Provide Local Services (in Which Countries Are There Overseas Service Outlets): None
Showroom Location (in Which Countries Are There Sample Rooms Overseas): None
Video Factory Inspection: Provided
Mechanical Test Report: Provided
Marketing Type: Ordinary Product
Place Of Origin: China
Species: Fin Tube
Use: Heater Parts
Certification: Ul
Warranty Period: 1 Year
Service System: Free Spare Parts, Online Support
Packaging: wooden box
Productivity: 10000 Piece/Pieces per Month
Transportation: Ocean,Air,Express
Place of Origin: China
Supply Ability: TBD
Certificate: ISO90001
HS Code: 8108904090
Port: Shanghai
Payment Type: T/T
Incoterm: FOB,EXW
L/LL/KL Finned Tube Product Description:
- KL Finned Tube（Knurled Aluminum Tubing）
This is manufactured similar to L fin except that the base tube is knurled before wrapping the 'L' shaped fin strip. After wrapping the fin strip, the fin foot is also knurled on the base tube to increase the bonding between the tube & fin. This will result in increased heat transfer performance.
Maximum Operating Temperature- 260 deg C
Tube Material - No theoretical limit.
Fin Material - Aluminium or copper
Aluminium fin strip is formed to L shape and then tension wound to the base tube.
Maximum operating temperature for L fin is 150 deg C.
Fin Material - Aluminium (or) copper
Tube Material - No theoretical limit
- LL Finned Tube
Aluminium fin strip is formed to L shape and tension wound on the tube with overlapping of fins as shown in the figure.
Maximum operating Temperature for LL fin is 180 deg C.
Fin Material - Aluminium or copper
Tube Material - No theoretical limit
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:
- L Finned Tube
Suitable for low-temperature application.
The finning type is the most cost effective method compared to the others.
The failed fins can be easily removed during production and bare tube can be used again for finning.
There is no need for make a helical grove over the core tube.
It is possible to place the fins on a very thin-walled tube with is particularly desirable when using expensive alloys as core tube.
The tube can withstand a temperature of up to 130°C without the risk of atmospheric corrosion or thermal stress.
- LL Finned Tube
This type of finned tube is often used as an alternative to the more expensive extruded type fin in corrosive environments.
Maximum operating temperature 170ºC.
- KL Finned Tube
Corrosion-resistant Tubes
Vibration resistance
It can withstand temperatures of up to 320°C (608°F).
High thermal performance and stress resistance combined with protection from air corrosion is a one-of-a-kind combo.
Any form of finned tube can be replaced with KL.
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.
L/LL/KL Finned Tube Specifications：
Product Specification Tube OD 19~51 (mm) 3/8”~2” Tube Wall Thk 1.65~3.0(mm) 0.065”~0.118” 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 L,LL,KL Material Combinations Fin Material Aluminum (most common grade:Alu.1100, Alu.1060, Alu. 6063) Copper 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
Temperature L Type:150°CL,LL Type:180°C,kL Type:260°C Type of Service L Type:Low temperature
LLType:Low temperature, corrosive atmospheric environment applications
KL Type:Medium temperature
Product Categories : L/LL/KL Finned Tube
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