DELLOK L/LL/KL Crimped Finned Tube - 260°C Max Temperature, Custom Lengths for Heat Exchangers
Price:
$10 - 100 /Piece/Pieces
MOQ:
1 meter
Delivery Time:
1-3weeks
Brand:
DELLOK Yonghui
Product Description
DELLOK Crimped Type Finned Tube Overview
DELLOK (YONGHUI RADIATING PIPE MANUFACTURING CO.,LTD.) specializes in high-quality finned tube manufacturing with extensive production capabilities including 47 finned tube production lines and annual capacity exceeding 12 million meters.
L/LL/KL Finned Tube Types
KL Finned Tube (Knurled Aluminum Tubing)
Manufactured with knurled base tube before wrapping L-shaped fin strip, providing enhanced bonding between tube and fin for superior 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 base tube.
- Maximum Operating Temperature: 150°C (302°F)
- Fin Material: Aluminum or copper
- Tube Material: No theoretical limit
LL Finned Tube
Aluminum fin strip formed to L shape with overlapping fins for improved corrosion resistance.
- Maximum Operating Temperature: 180°C (356°F)
- Fin Material: Aluminum or copper
- Tube Material: No theoretical limit
Manufacturing Process
Fin strip wrapped under tension around base tube with fins welded to base tube at strip ends for secure attachment.
Technical Advantages
L Finned Tube Benefits
- Suitable for low-temperature applications
- Most cost-effective finning method
- Failed fins easily removable during production
- No helical groove required on core tube
- Compatible with thin-walled tubes for expensive alloys
- Withstands temperatures up to 130°C without atmospheric corrosion risk
LL Finned Tube Benefits
- Alternative to expensive extruded fin types in corrosive environments
- Maximum operating temperature: 170°C
KL Finned Tube Benefits
- Corrosion-resistant construction
- Vibration resistance capability
- Withstands temperatures up to 320°C (608°F)
- High thermal performance and stress resistance
- Protection from air corrosion
- Suitable replacement for any finned tube type
Performance Properties
| Property | Rating |
|---|---|
| Atmospheric Corrosion Resistance | Acceptable |
| Mechanical Resistance | Poor |
| Fin Contact | Interference Fit |
| Fin To Tube Bond | Moderate |
| Heat Transfer Efficiency | Moderate |
Industrial Applications
L/LL/KL finned tubes serve critical heat transfer functions across multiple industries:
- 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 | No Limit (customizable) |
| Working Temperature | Up to 230°C |
| Key Features | High production efficiency, uniform fin spacing, superior heat transfer, high finization ratio, base tube protection from air erosion |
Custom Manufacturing Capabilities
DELLOK offers customized finned tube solutions tailored to individual customer requirements, with comprehensive technical support and quality assurance throughout the production process.
Frequently Asked Questions
Q: What is your lead time for production?
A: Generally samples require 1-3 days, mass production needs 15-30 days depending on specific requirements.
A: Generally samples require 1-3 days, mass production needs 15-30 days depending on specific requirements.
Q: What is the warranty for your products?
A: We provide one year warranty for all products.
A: We provide one year warranty for all products.
Q: What payment terms do you accept?
A: Trade assurance, TT, Western Union.
A: Trade assurance, TT, Western Union.
Q: What are the modes of transportation?
A: Air freight, sea freight, express delivery - we select the most suitable method based on your requirements.
A: Air freight, sea freight, express delivery - we select the most suitable method based on your requirements.
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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