E-Catalogue

Notched Fin Tubes Manufacturer & Supplier for High-Efficiency Heat Transfer Applications

Notched Fin Tubes are advanced finned tubes featuring strategically cut notches along the fin surface to improve airflow turbulence, reduce fouling, and enhance heat transfer efficiency. These tubes are widely used in heat exchangers, waste heat recovery systems, boilers, economizers, and air-cooled heat exchangers (ACHE) where improved thermal performance and lower maintenance costs are essential.

What Are Notched Fin Tubes?

Notched Fin Tubes are specialized heat transfer tubes manufactured with fins that contain precision-engineered notches or cuts along the fin profile. These notches disrupt boundary layer formation and create controlled turbulence in the surrounding airflow, resulting in significantly improved heat transfer rates compared to conventional finned tubes.

The notched design allows better air circulation around the tube surface while minimizing the accumulation of dust, ash, soot, and process contaminants. Because of these advantages, Notched Fin Tubes are commonly selected for demanding industrial environments where thermal efficiency and long-term reliability are critical.

As an experienced Notched Fin Tube Manufacturer, we supply high-performance finned tubes designed to meet the requirements of modern thermal systems across power generation, petrochemical processing, HVAC, marine engineering, and waste heat recovery applications.

How Do Notched Fin Tubes Improve Heat Transfer?

The effectiveness of a finned tube depends on how efficiently heat moves between the process fluid and the surrounding medium. The notched fin design improves this process in several ways:

  •   Increased Turbulence: The notches interrupt smooth airflow and create localized turbulence, enhancing heat exchange.
  •   Reduced Thermal Boundary Layer: The notches continuously disturb the insulating boundary layer that naturally forms around the fins.
  •   Better Air Distribution: Air flows more uniformly through the fin structure, reducing stagnant zones.
  •   Enhanced Surface Utilization: More of the fin surface participates actively in heat transfer.
  •   Lower Fouling Tendencies: Accumulation of particulate matter is minimized, maintaining efficiency over longer operating periods.

These advantages make High-efficiency notched finned pipes an excellent solution for applications requiring maximum thermal performance.

Table of Content


Key Features of Notched Fin Tubes


Our Custom notched fin tubes for heat exchangers are manufactured with strict quality control standards and offer numerous performance benefits:

  •   Enhanced heat transfer efficiency
  •   Reduced pressure drop compared to conventional fin arrangements
  •   Improved airflow characteristics
  •   Excellent resistance to fouling and dust accumulation
  •   Longer service life
  •   Superior mechanical bond between fin and tube
  •   Suitable for high-temperature applications
  •   Reduced maintenance requirements
  •   Optimized performance in dirty operating environments
  •   Available in multiple materials and fin configurations

Types of Notched Fin Tubes We Manufacture


HFW Notched Fin Tubes

HFW Notched Fin Tubes are manufactured using High Frequency Welding technology that creates a continuous metallurgical bond between the fin strip and base tube.

Advantages include:

  •   Strong fin-to-tube attachment
  •   High thermal conductivity
  •   Excellent mechanical strength
  •   Resistance to vibration
  •   Suitable for severe operating conditions

These tubes are commonly used in refinery heaters, boilers, economizers, and heat recovery units.

Notched Spiral Finned Tubes

Notched Spiral Finned Tubes feature helically wound fins with strategically placed notches that improve airflow patterns around the tube bundle.

Benefits include:

  •   Uniform heat distribution
  •   Increased external heat transfer coefficient
  •   Better cleaning characteristics
  •   Improved thermal performance

These tubes are widely used in industrial heat exchangers and process cooling systems.

Serrated Helical Fin Tubes

Serrated helical fin tubes are a variation of notched fin technology where the fin edge is segmented into serrated sections.

Key advantages:

  •   Higher turbulence generation
  •   Enhanced convective heat transfer
  •   Reduced fouling
  •   Improved performance in gas-side heat transfer applications

Industries often select serrated configurations for demanding thermal recovery systems and high-temperature exhaust gas applications.

Anti-Fouling Performance of Notched Fin Tubes


One of the most important benefits of Anti-fouling finned tubes is their ability to operate efficiently in environments containing dust, soot, ash, and particulate matter.

Traditional finned tubes may suffer from performance degradation due to deposit buildup. Notched fin designs help reduce this problem by:

  •   Promoting self-cleaning airflow patterns
  •   Minimizing dead zones between fins
  •   Reducing particulate accumulation
  •   Maintaining consistent thermal efficiency

This makes notched fin technology particularly valuable in industries where downtime and maintenance costs can significantly affect productivity.

Notched Fin Tubes Specifications

Parameter

Specification

Product Type

Notched Fin Tubes
Fin Type
Notched / Serrated Helical Fin
Manufacturing Method
High Frequency Resistance Welding (HFW)
Tube OD Range
19.05 mm to 76.2 mm
Tube Thickness
1.5 mm to 8.0 mm
Fin Height
5 mm to 25 mm
Fin Thickness
0.8 mm to 3.0 mm
Fin Pitch
3 FPI to 12 FPI
Tube Length
Up to 25 Meters
Fin Material
Carbon Steel, Stainless Steel, Aluminum, Copper
Tube Material
Carbon Steel, Stainless Steel, Alloy Steel, Copper Alloy, Nickel Alloy
Operating Temperature
Up to 550°C
Surface Finish
Mill Finish, Painted, Galvanized, Coated
Welding Method
High Frequency Resistance Welded
Standards
ASTM, ASME, DIN, EN, BS
Applications
ACHE, Economizers, Boilers, Heat Exchangers, Waste Heat Recovery

Carbon Steel Notched Fin Tubes Mechanical Properties


Typical values for ASTM A179 / ASTM A192 Carbon Steel Tubes

Property Value
Tensile Strength325 MPa Min
Yield Strength180 MPa Min
Elongation35% Min
Hardness72 HRB Max
Modulus of Elasticity200 GPa
Density7.85 g/cm³
Thermal Conductivity60 W/m·K
Melting Point1425°C – 1540°C

Stainless Steel 304 Notched Fin Tubes Mechanical Properties


Property Value
Tensile Strength515 MPa Min
Yield Strength205 MPa Min
Elongation40% Min
Hardness92 HRB Max
Density8.00 g/cm³
Modulus of Elasticity193 GPa
Thermal Conductivity16.2 W/m·K
Melting Point1400°C – 1450°C

Stainless Steel 316 Notched Fin Tubes Mechanical Properties


Property Value
Tensile Strength515 MPa Min
Yield Strength205 MPa Min
Elongation40% Min
Hardness95 HRB Max
Density8.00 g/cm³
Modulus of Elasticity193 GPa
Thermal Conductivity16.3 W/m·K
Melting Point1375°C – 1400°C

Carbon Steel Chemical Composition


Element Composition (%)
Carbon (C)0.06 – 0.18
Manganese (Mn)0.27 – 0.63
Phosphorus (P)≤ 0.035
Sulfur (S)≤ 0.035
Iron (Fe)Balance

Stainless Steel 304 Chemical Composition


Element Composition (%)
Carbon (C)0.08 Max
Silicon (Si)1.00 Max
Manganese (Mn)2.00 Max
Phosphorus (P)0.045 Max
Sulfur (S)0.030 Max
Chromium (Cr)18.00 – 20.00
Nickel (Ni)8.00 – 10.50
Nitrogen (N)0.10 Max
Iron (Fe)Balance

Stainless Steel 316 Chemical Composition


Element Composition (%)
Carbon (C)0.08 Max
Silicon (Si)1.00 Max
Manganese (Mn)2.00 Max
Phosphorus (P)0.045 Max
Sulfur (S)0.030 Max
Chromium (Cr)16.00 – 18.00
Nickel (Ni)10.00 – 14.00
Molybdenum (Mo)2.00 – 3.00
Nitrogen (N)0.10 Max
Iron (Fe)Balance

Applications of Notched Fin Tubes


Our Industrial notched finned tube supplier solutions are used across numerous industries and heat transfer systems.

  •   Air-Cooled Heat Exchangers (ACHE): Air-cooled heat exchanger (ACHE) notched fins improve cooling efficiency while reducing airflow resistance and maintenance requirements.
  •   Waste Heat Recovery Systems: Notched fin tubes for waste heat recovery maximize thermal energy extraction from exhaust gases and industrial process streams.
  •   Power Plants: Used in economizers, boilers, heat recovery units, and auxiliary cooling systems.
  •   Petrochemical Industry: Applied in process heaters, condensers, and thermal recovery equipment.
  •   Refineries: Improve energy efficiency in refinery heating and cooling operations.
  •   Chemical Processing Plants: Suitable for corrosive and high-temperature environments.
  •   HVAC Systems: Used in specialized industrial heating and cooling applications.
  •   Marine Heat Exchangers: Provide efficient thermal transfer in compact installation spaces.

Materials Available for Notched Fin Tubes


We manufacture notched fin tubes using a wide range of materials to suit different operating conditions.

Tube Materials

  •   Carbon Steel
  •   Stainless Steel 304
  •   Stainless Steel 304L
  •   Stainless Steel 316
  •   Stainless Steel 316L
  •   Alloy Steel
  •   Duplex Stainless Steel
  •   Copper Alloys
  •   Nickel Alloys

Fin Materials


Material selection is based on temperature, pressure, corrosion resistance, and process requirements.

Manufacturing Process of HFW Notched Fin Tubes


Our manufacturing process follows stringent quality procedures to ensure reliable thermal performance.

Process Steps

  •   Raw material inspection
  •   Tube preparation
  •   Fin strip preparation
  •   Precision notch formation
  •   High-frequency welding
  •   Continuous fin winding
  •   Weld integrity testing
  •   Dimensional inspection
  •   Surface treatment
  •   Final quality verification

Each stage is monitored to ensure consistent quality and compliance with international standards.

Why Choose Us for Notched Fin Tubes?


Customers worldwide rely on us because we offer:

  •   Engineering Expertise: Years of experience manufacturing finned tube solutions for complex thermal systems.
  •   Custom Manufacturing: Tailor-made dimensions, materials, fin configurations, and tube lengths.
  •   Consistent Product Quality: Strict quality assurance procedures throughout production.
  •   Fast Delivery: Efficient manufacturing processes and project support.
  •   Technical Assistance: Support for material selection, design optimization, and application requirements.
  •   Competitive Pricing: High-quality products delivered at cost-effective rates.

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