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Rectangular Finned Tubes Manufacturer, Supplier & Exporter

Rectangular Finned Tubes are highly efficient heat transfer tubes, manufactured with rectangular or H type fins fastened to the outside surface of a base tube. They are effective in increasing heat transfer surface, promoting thermal performance, minimizing fouling and boosting efficiency of equipment such as boilers, economizers, waste heat recovery units, flue gas heat exchangers, marine service etc. Their sturdiness make them well-suited for high temperature and dusty operating environments where the conventional finned tube might suffer from diminished performance.

High-Performance Rectangular Finned Tubes for Industrial Heat Transfer Applications

Heat recovery and thermal efficiency are significant aspects required for the industry. Industries like power generation, petrochemicals, marine engineering and industrial boilers employ finned tubes to achieve a high level of heat transfer at a lower operational cost.

We are a specialized and seasoned Rectangular Finned Tube Manufacturer providing top quality finned tubes for all tough thermal applications with high heat transfer efficiency and long life span even at challenging environments.

The unique design of rectangular fins provide much greater external heat transfer surface area than conventional tubes. This helps industries to improve thermal efficiency without compromising the size of the equipment.

With our manufacturing ability, we custom engineer these products for various working environment conditions, temperatures, pressures and specific process applications.

What Are Rectangular Finned Tubes?

Rectangular Finned Tubes are heat exchanger tubes fitted with rectangular-shaped fins welded or mechanically attached to the external surface of the tube. These fins increase the effective heat transfer area and improve thermal conductivity between the tube-side fluid and surrounding air or gas.

The rectangular fin configuration is particularly effective in applications involving:

  •   Flue gas heat recovery
  •   Boiler economizers
  •   Air preheaters
  •   Waste heat recovery units
  •   Marine boilers
  •   Industrial heat exchangers
  •   Power plant systems

Compared to traditional circular fin designs, rectangular fins provide improved gas flow characteristics and enhanced resistance to fouling in dusty environments.

Table of Content


Key Features of Rectangular Finned Tubes


  •   Superior Heat Transfer Efficiency: The increased external surface area significantly enhances thermal performance and heat recovery rates.
  •   Anti-Fouling Design: Our Anti-Fouling Rectangular Finned Tubes are designed to minimize ash accumulation, dust deposition, and particulate build-up, ensuring sustained performance.
  •   High Mechanical Strength: Robust fin construction withstands vibration, thermal cycling, and high-pressure operating conditions.
  •   Excellent Corrosion Resistance: Available in stainless steel, carbon steel, alloy steel, and special alloys to suit aggressive environments.
  •   Reduced Maintenance Requirements: The rectangular fin design allows easier cleaning and lower maintenance frequency.
  •   Long Service Life: Precision manufacturing and quality-controlled welding ensure durability and reliability.

Types of Rectangular Finned Tubes We Manufacture


H-Type Rectangular Finned Tubes

As a leading H-Type Rectangular Fin Tube Exporter, we manufacture H-fin tubes that feature two rectangular fins welded symmetrically on opposite sides of the tube.

Benefits include:

  •   Increased heat transfer area
  •   Reduced flue gas resistance
  •   Improved soot-blowing efficiency
  •   Excellent anti-wear performance
  •   Lower ash deposition rates

H-type fin tubes are extensively used in utility boilers, industrial boilers, and economizer sections.

Double H Fin Tubes

Double H fin tubes provide even greater heat transfer efficiency and are commonly used in:

  •   Waste heat recovery boilers
  •   Thermal power plants
  •   Cement plants
  •   Steel processing industries

Customized Rectangular Finned Tubes

As a trusted Custom Rectangular Fin Tubes Supplier, we manufacture finned tubes according to customer drawings, specifications, and application requirements.

Customization options include:

  •   Fin thickness
  •   Fin pitch
  •   Tube diameter
  •   Material grades
  •   Tube length
  •   Surface treatment

Rectangular Finned Tubes Specifications Chart

Parameter

Specification

Product Name

Rectangular Finned Tubes
Fin Type
Rectangular Fin / H-Type Fin / Double H Fin
Base Tube OD
25.4 mm to 76.2 mm
Base Tube Thickness
2.0 mm to 10 mm
Fin Thickness
1.5 mm to 5.0 mm
Fin Height
10 mm to 50 mm
Fin Pitch
8 mm to 30 mm
Tube Length
Up to 18 Meters
Fin Attachment
High Frequency Welded / Resistance Welded
Fin Shape
Rectangular / H-Type
Operating Temperature
Up to 650°C
Operating Pressure
As per Design Requirements
Surface Finish
Mill Finish, Pickled, Passivated, Shot Blasted
Manufacturing Standard
ASTM, ASME, DIN, EN, BS
Inspection & Testing
Visual, Dimensional, Hydro, PMI, NDT
End Protection
Plastic Caps / Beveled Ends
Packaging
Wooden Cases, Bundles, Export Packing

Rectangular Finned Tubes Mechanical Properties Chart


Carbon Steel ASTM A179 (Typical)

PropertyValue
Tensile Strength325 MPa Min
Yield Strength180 MPa Min
Elongation35% Min
Hardness72 HRB Max
Density7.85 g/cm³
Melting Point1425-1540°C

Stainless Steel 304 (Typical)

PropertyValue
Tensile Strength515 MPa Min
Yield Strength205 MPa Min
Elongation40% Min
Hardness92 HRB Max
Density8.00 g/cm³
Melting Point1400-1450°C

Stainless Steel 316 (Typical)

PropertyValue
Tensile Strength515 MPa Min
Yield Strength205 MPa Min
Elongation40% Min
Hardness95 HRB Max
Density8.00 g/cm³
Melting Point1375-1400°C

Rectangular Finned Tubes Chemical Composition Chart


Carbon Steel ASTM A179

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

Stainless Steel 304

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
Iron (Fe)Balance

Stainless Steel 316

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
Iron (Fe)Balance

Common Standards for Rectangular Finned Tubes


Tube Material ASTM / ASME Standard
Carbon SteelASTM A179, A192, A210
Stainless SteelASTM A213, A269, A312
Alloy SteelASTM A213 T11, T22, T91
Duplex SteelASTM A789, A790
Copper NickelASTM B111
InconelASTM B444
MonelASTM B165
HastelloyASTM B622

Applications of Rectangular Finned Tubes


Flue Gas Heat Exchangers

Our Flue Gas Heat Exchanger Finned Tubes maximize heat recovery from exhaust gases and improve overall plant efficiency.

Applications include:

  •   Industrial furnaces
  •   Waste heat boilers
  •   Thermal oxidizers
  •   Incinerators

Marine Boilers

The durability and corrosion resistance of our Marine Boiler Rectangular Finned Tubes make them suitable for marine environments where equipment is exposed to moisture, vibration, and salt-laden air.

Power Generation Plants

Used extensively in:

  •   Boiler economizers
  •   Air preheaters
  •   Heat recovery systems
  •   Exhaust gas treatment units

Petrochemical Industries

Ideal for:

  •   Process heaters
  •   Refinery heat exchangers
  •   Energy recovery systems

Cement and Steel Plants

Their anti-fouling characteristics make them highly effective in dusty process environments.

Manufacturing Process of Rectangular Finned Tubes


Rectangular Finned Tube

Benefits of Choosing Our Rectangular Finned Tubes


When selecting a Square Finned Tube Supplier, quality, engineering expertise, and manufacturing capabilities are critical.

Our advantages include:

  •   Custom manufacturing capabilities
  •   Global export experience
  •   Strict quality control procedures
  •   Competitive pricing
  •   Short delivery schedules
  •   Industry-compliant production standards
  •   Technical support from experienced engineers
  •   Material traceability and inspection reports

Available Materials


We manufacture rectangular finned tubes using various materials including:

Carbon Steel

  •   ASTM A179
  •   ASTM A192
  •   ASTM A210

Stainless Steel

  •   SS 304
  •   SS 304L
  •   SS 316
  •   SS 316L
  •   SS 321

Alloy Steel

  •   ASTM A213 T11
  •   ASTM A213 T22
  •   ASTM A213 T91

Special Alloys

  •   Inconel
  •   Monel
  •   Hastelloy
  •   Duplex Stainless Steel
  •   Super Duplex Stainless Steel

Quality Standards and Testing


Our rectangular finned tubes are manufactured in accordance with international standards such as:

  •   ASTM
  •   ASME
  •   DIN
  •   EN
  •   BS
  •   ISO

Quality checks include:

  •   Raw material verification
  •   Weld integrity inspection
  •   Dimensional verification
  •   Pressure testing
  •   Mechanical testing
  •   Surface finish inspection

Why Choose Us for Rectangular Finned Tubes?


With extensive manufacturing expertise, advanced production facilities, and strict quality control systems, we supply high-performance rectangular finned tubes for critical industrial applications worldwide.

Our engineering team works closely with customers to develop optimized finned tube solutions that improve heat transfer efficiency, reduce energy consumption, and increase operational reliability.

Whether you require Rectangular Finned Tubes, H-Type Rectangular Fin Tubes, Anti-Fouling Rectangular Finned Tubes, Marine Boiler Rectangular Finned Tubes, or custom-engineered heat transfer solutions, we deliver products that meet the highest standards of quality and performance.

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