KL Finned Tubes Manufacturer and Supplier in India
KL Fin Tubes are mechanical enhancement heat exchanger tubes and include a fin wrapped around the base tube in an L shape and the fin foot rolled into the tube to provide a greater mechanical lock. The secondary rolling process expands the fin to tube contact area by almost 50%, thereby enhancing the heat transfer performance, decreasing thermal resistance, and making the parts more resistant to continuous thermal cycling. KL finned tubes are designed to handle heat recovery systems with medium temperature up to 250°C. Many air coolers, economizers, condensers, process heaters, power plants, petrochemical industries, and HVAC equipment use them for their dependable thermal
performance. Amardeep Steel is a trusted KL Fin Tubes manufacturer and supplier in India with precision tubes manufactured in various base materials, fin shape and custom size, with international quality standards.
Technical Data
Specifications of KL Fin Tubes
| Feature / Parameter | Standard Specification / Available Size |
|---|---|
| Fin Thickness | 0.8 mm to 3.0 mm (0.031″ to 0.118″) |
| Fin Height | 0.25″ (6.35 mm) min to 1.5″ (38.1 mm) max (depends on tube OD) |
| Fin Density | 46 to 287 fins/meter (approx. 1.2 to 7.3 FPI) (depends on fin thickness) |
| Fin Material | Carbon Steel, Stainless Steel (304, 316, 310, 410, 321, 347, etc.), Alloy Steel (P5, P9, P11, P22, etc.), Inconel, High Chrome, High Nickel, Incoloy, Copper Alloys, Aluminum, Titanium, or other alloys as specified |
| Tube Outer Diameter (OD) | 30 mm to 220 mm (1.18″ to 8.66″) |
| Tube Wall Thickness | 2.0 mm (0.079″) min |
| Tube Material | Carbon Steel, Stainless Steel (304, 316, 310, 410, 321, 347, etc.), Alloy Steel (P5, P9, P11, P22, etc.), Inconel, High Chrome, High Nickel, Incoloy, Copper Alloys, Aluminum, Titanium, or other alloys as specified |
Chemical Compositions of KL Fin Tubes
| Material Grade | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Ni (%) | Cr (%) | Mo (%) | Fe (%) | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|
| Carbon Steel (A106 Gr B) | 0.30 max | 0.29 – 1.06 | 0.10 max | 0.035 max | 0.035 max | — | — | — | Balance | — |
| Stainless Steel (304) | 0.08 max | 2.00 max | 0.75 max | 0.045 max | 0.03 max | 8.0 – 10.5 | 18.0 – 20.0 | — | Balance | — |
| Stainless Steel (316) | 0.08 max | 2.00 max | 0.75 max | 0.045 max | 0.03 max | 10.0 – 14.0 | 16.0 – 18.0 | 2.0 – 3.0 | Balance | — |
| Copper Alloy (C12200) | — | — | — | — | — | — | — | — | — | Cu: 99.9% min P: 0.015% max |
| Aluminum (1100) | — | 0.05 – 0.20 | 0.95 max | — | — | — | — | — | Balance | Cu: 0.05% max |
| Titanium (Grade 2) | — | — | — | — | — | — | — | — | — | Ti: Balance O: 0.3% max C: 0.08% max |
KL Fin Tubes Mechanical Properties
| Property | Copper | Aluminum | Steel | Stainless Steel | Brass |
|---|---|---|---|---|---|
| Density (g/cm 3 ) | 8.96 | 2.7 | 7.85 | 8.0 | 8.5 |
| Thermal Conductivity (W/m⋅K) | 390 | 205 | 50 | 16 | 109 |
| Young's Modulus GPa | 110 – 130 | 69 | 200 | 190 – 210 | 100 |
| Yield Strength MPa | 70 – 200 | 90 – 140 | 250 – 350 | 190 – 350 | 200 |
| Ultimate Tensile Strength MPa | 220 – 260 | 200 – 300 | 400 – 550 | 515 – 750 | 300 – 500 |
| Corrosion Resistance | Excellent | Good | Poor (if uncoated) | Excellent | Good |
| Specific Heat (J/g⋅K) | 0.385 | 0.897 | 0.49 | 0.50 | 0.377 |
Applications of KL Fin Tubes
- Petrochemical Industry
- Electric Power Generation
- Paper Production Industry
- Tobacco Industry
- Building Heating
- Food Industry
Frequently Asked Questions
1. What are KL Fin Tubes?
KL Fin Tubes are heat exchanger tubes with L-shaped fins that are mechanically rolled into the base tube to provide efficient and long-lasting heat transfer.
2. What are KL Fin Tubes used for?
They are used in air coolers, economizers, condensers, boilers, HVAC systems, and industrial heat exchangers.
3. What is the difference between KL Fin Tubes and L Type Fin Tubes?
KL Fin Tubes undergo an additional rolling process that increases fin-to-tube contact, providing better heat transfer and a stronger mechanical bond than L Type Fin Tubes.
4. What is the maximum operating temperature of KL Fin Tubes?
KL Fin Tubes can typically operate at temperatures up to 250°C.
5. Are KL Fin Tubes suitable for high-temperature applications?
Yes. They are suitable for medium-temperature heat exchange applications up to 250°C, offering reliable thermal performance and durability.
