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Murphy Thermal Energy Co., Ltd.
Model No.: MURPHY-25
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,Land
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,CFR,CIF,FAS,CIP,CPT,DDP,DDU,Express Delivery
L/LL/KL Finned Tube Product Description:
- LL Finned Tube
Manufactured in the same way as the ‘L’ fin type except that the fin foot is overlapped to completely enclose the base tube thereby giving excellent corrosion resistance. This type of tube is often used as an alternative to the more expensive extruded type fin in corrosive environments. Maximum operating temperature for this fin type is 180°C.
Fin material : Aluminium or copper.
Tube materials : No theoretical limits.
- KL Finned Tube(Knurled Aluminum Tubing)
Manufactured exactly as the ‘L’ fin except that the base tube is knurled before application of the fin foot. After application the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between the fin and tube resulting in improved heat transfer characteristics. Maximum operating temperature for this fin type is 260°C.
Fin material : Aluminium or copper.
Tube materials : No theoretical limits.
The strip material is subjected to controlled deformation under tension giving the optimum contact pressure of the foot of the fin onto the base tube thus maximising the heat transfer properties. The foot of the fin considerably enhances the corrosion protection of the base tube. Maximum operating temperature for this fin type is 150°C.
Fin material : Aluminium or copper.
Tube materials : No theoretical limits.
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
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.