DELLOK Spiral Cold Wound Finned Tube L/LL/KL Type 150-260°C Heat Transfer Industrial Grade
Price:
$10 - 100 /Piece/Pieces
MOQ:
1 meter
Delivery Time:
1-3weeks
Brand:
DELLOK Yonghui
Product Description
DELLOK Spiral Cold Wound Finned Tube Overview
DELLOK (YONGHUI RADIATING PIPE MANUFACTURING CO.,LTD.) specializes in manufacturing high-quality spiral cold wound finned tubes for industrial heat transfer applications. With over 20 years of experience and extensive production capabilities, we deliver reliable thermal solutions for various industries.
L/LL/KL Finned Tube Types
KL Finned Tube (Knurled Aluminum Tubing)
Manufactured with knurled base tube before wrapping the 'L' shaped fin strip. The fin foot is also knurled after wrapping to enhance tube-fin bonding and improve heat transfer performance.
- Maximum Operating Temperature: 260°C (500°F)
- Tube Material: Carbon steel, stainless steel, copper, aluminum
- Fin Material: Aluminum or copper
L Finned Tube
Aluminum fin strip formed to L shape and tension wound to the base tube.
- Maximum Operating Temperature: 150°C (302°F)
- Tube Material: Carbon steel, stainless steel, copper, aluminum
- Fin Material: Aluminum or copper
LL Finned Tube
Aluminum fin strip formed to L shape and tension wound with overlapping fins for enhanced corrosion resistance.
- Maximum Operating Temperature: 180°C (356°F)
- Tube Material: Carbon steel, stainless steel, copper, aluminum
- Fin Material: Aluminum or copper
Manufacturing Process
Finned tubes are manufactured with strip wrapped under tension around the base tube. Fins are welded to the base tube at the strip ends, ensuring secure attachment and optimal thermal performance.
Technical Advantages
L Finned Tube Benefits
- Suitable for low-temperature applications
- Most cost-effective finning method
- Failed fins can be easily removed during production
- No helical groove required on core tube
- Compatible with thin-walled tubes for expensive alloys
- Withstands temperatures up to 130°C without corrosion risk
LL Finned Tube Benefits
- Alternative to expensive extruded fins in corrosive environments
- Maximum operating temperature: 170°C
KL Finned Tube Benefits
- Enhanced corrosion resistance
- Superior vibration resistance
- Withstands temperatures up to 320°C (608°F)
- High thermal performance and stress resistance
- Protection from air corrosion
- Can replace any form of finned tube
Performance Properties
| Property | Rating |
|---|---|
| Atmospheric Corrosion Resistance | Good |
| Mechanical Resistance | Poor |
| Fin Contact | Interference Fit |
| Fin To Tube Bond | Moderate |
| Heat Transfer Efficiency | Moderate |
Industrial Applications
- Petroleum, chemical and petrochemical process industries
- Natural gas treatment facilities
- 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 systems (Freon, ammonia, propane)
- Incineration of household refuse
- Compressor coolers and heat exchangers
- Paper making, tobacco, and building heating industries
- Food industry spray drying systems for vegetable protein and starch
Product Specifications
| Parameter | Specification |
|---|---|
| Fin Type | L/LL/KL Finned Tube |
| Tube Material | Carbon steel, stainless steel, copper, aluminum |
| Fin Material | Copper, aluminum |
| Fin Tube Length | Customizable (No Limit) |
| Working Temperature | Up to 230°C |
| Key Features | High production efficiency, uniform fin spacing, excellent heat transfer, high finization ratio, base tube protection from air erosion |
Frequently Asked Questions
What is your lead time for production?
Generally samples require 1-3 days, mass production requires 15-30 days, depending on specific requirements.
What is the warranty for your products?
We provide one year warranty for all products.
What payment terms do you accept?
Trade assurance, TT, Western Union.
What are the modes of transportation?
Air freight, sea freight, express delivery. We select the most suitable method based on your requirements.
Customization Available: We customize finned tubes according to individual customer requirements. Contact us for detailed specifications and pricing.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
Location
No.18 Tianyue Road,Yanzhou,Jiangsu China
Contact Person
Peter Cheng