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Murphy Thermal Energy Co., Ltd.
Model No.: murphy-32
Brand: Murphy
Status: New
Applicable Industry: Machinery Repair Shops, Manufacturing Plant, Energy &Amp; Mining, Other
Out-of-warranty Service: Video Technical Support, Online Support, Spare Parts
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: Heat Exchanger Tube
Use: Heater Parts
Certification: Ce
Warranty Period: 1 Year
Service System: Free Spare Parts, Video Technical Support, Online Support
Packaging: wooden box
Productivity: TBD
Transportation: Ocean,Air,Express
Place of Origin: China
Supply Ability: TBD
Certificate: ISO90001
HS Code: 8419909000
Port: Shanghai,Ningbo Port,Qingdao Port
Payment Type: T/T
Incoterm: FOB,EXW
L/LL/KL Finned Tube Product Description:
- KL Finned Tube(Knurled Aluminum Tubing)
KL type finned tube is also known as knurled finned tube. It is used to roll the pattern on the base tube before winding the fin, or to add a blade on the winding machine. Knurling is used on the base tube, and the blade behind is used for winding.
Before the fins are continuously wound on the surface of the steel pipe, the outer surface of the base pipe needs to undergo a knurling process; after the fins are wound, the root of the fin attached to the steel pipe will also be knurled to strengthen the steel pipe and Combination of fins. For this reason, this fin type ensures better heat transfer characteristics under the fins of L and LL. Commonly used heat sink materials are aluminum and copper
The L Fin Tube , LL FIN TUBE , KL FIN TUBE also known as Winding Fin Tube . This type of fin tube widely finds acceptance where the heat transfer temperature is relatively lower and the cost needs to be controlled. These type of fin tubes are relatively lesser in cost as compared to the ‘G’Type Fin Tube and the Extruded Type Fin Tube .
Description
In ‘L’ Type Fin Tube or also known as ‘L’ Foot Fin Tube the finning is done by wrapping around the Fin stock spirally around the base tube. This is as reason also known as spirally wound Fin Tube. The base of the fin stock is shaped in to and ‘L’ shape which gives a base for the fin to stand on firmly. Also the ‘L’ shape provides a certain protection against the atmospheric corrosion.
- LL Finned Tube
LL type winding finned tube: under the l-type foundation, the fin root completely covers the outer surface of the base tube, which can strengthen the contact surface and increase the heat exchange effect.
Maximum operating temperature: 170℃.
Double “L” fin is used on applications requiring additional corrosion protection to the surface of the base tube. The production process is similar to the L Fin Tube type . However , the improvement is that the ‘L’ Foot of the previous fin is completely overlapped by the ‘L’Foot of the next fin. This gives the Fin base a shape of tow ‘L’ foot simultaneously.
Operating temperature is a little higher than for L fin.
A wide range of both tube and fin materials are available.
Heat transfer performance can be enhanced by utilising unique internal solder bonded or pulled in secondary surface/turbulator system.
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 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
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.