Finned Tubes 

Finned Tubes Manufacturers, Suppliers & Exporters in India 

Solitaire Overseas is an Aramco approved finned tubes manufacturer and exporter based in Mumbai, India. We supply crimped, L-base, G-base, integral, spiral-wound and wire-wound finned tubes in stainless steel, Inconel, Monel, Hastelloy, copper-nickel and other alloys, manufactured to national and international standards. Tubes are supplied in straight lengths or U-bend form, with the bend section finned or left plain as required for your assembly.

Finned tubes from Solitaire Overseas are used in recuperators, heat exchangers, evaporators, condensers, air-cooled condensers and radiators, marine equipment, corrosion-resistant process heaters, oil heaters and oil coolers. Send us your tube specification, fin type and quantity and we will confirm availability and pricing within 24 hours. 

Enquire Now →

What Are Finned Tubes and Why Are They Used?

A finned tube is a heat exchanger tube with fins attached to or formed on its outer surface, increasing the surface area in contact with the fluid outside the tube, usually air or another gas. Heat transfer between two fluids across a tube wall depends on the temperature difference between them, the heat transfer coefficient of each fluid, and the surface area each fluid is exposed to. On a bare tube, the fluid with the lower heat transfer coefficient limits the overall rate of heat exchange. Gases have a naturally lower heat transfer coefficient than liquids, so wherever one side of an exchanger runs on air or flue gas rather than a second liquid, fins on the outside compensate by multiplying the available surface area in some configurations increasing it by several times over an equivalent bare tube. 

The practical benefit is fewer tubes for the same thermal duty: a well-specified finned bundle can do the work of several bare tubes in a smaller shell, which is why fin tubes for heat exchanger, air-cooled condenser and radiator applications are specified over plain tubing wherever the outside fluid is a gas.

As an Aramco approved finned tubes supplier, Solitaire Overseas manufactures Continuous Spiral Crimped Fins for efficient heat dissipation and wire-wound finned tubes valued for their mechanical durability. Carbon steel finned tubes are supplied for higher-temperature service, and aluminium finned tubes where a lightweight, cost-efficient option is preferred. As a finned tubes manufacturer in India serving the process, power and HVAC industries, we tailor the base tube grade, fin type and fin density to the application.

Stainless Steel Finned Tubes

Stainless steel finned tubes are used across a wide range of industrial heat exchanger applications where corrosion resistance is a priority. Our stainless steel fin tubes are inspected and approved by the customer or a nominated third-party inspection agency before dispatch, supplied in custom-made shapes and sizes, and hydro tested at the specified pressure after the finning operation to help ensure a defect-free product.

Carbon Steel Finned Tubes

Carbon steel finned tubes are a versatile, cost-effective option for heat transfer duty, commonly used in heat exchangers, condensers and evaporators. Our carbon steel fin tubes are processed from various grades in both seamless and welded construction.

Types of Finned Tubes We Offer 

Solitaire Overseas manufactures a full range of finned tube configurations, each suited to a different fin-attachment method, operating temperature and fouling environment:

• Extruded Finned Tubes

An outer sleeve is mechanically bonded over the base tube and machined to form integral fins, giving strong thermal contact across the entire fin base with no brazed joint to fail. A standard choice for air fin coolers, air-cooled condensers and heat recovery service.

• Embedded Fin Tube / G-Type Finned Tubes

A helical groove is machined into the base tube, the fin root is pressed into it and the groove is closed by rolling. This mechanical interlock removes any air gap between fin and tube, holding good thermal contact even at higher continuous operating temperatures, which is why G-type is often preferred for higher-duty air coolers.

• L-Type Finned Tubes

Fin strip is helically wound under tension around the base tube with the fin root bent into an L-shape that grips the tube mechanically. Suited to moderate-temperature service such as HVAC and process gas coolers.

• LL-Type Finned Tubes

A double-L foot configuration for improved grip over standard L-type, used where slightly higher mechanical security at the fin base is needed.

• KL-Type Finned Tubes

Adds a knurled tube surface at the contact point for better heat transfer at the fin base, within the same tension-wound family as L and LL types.

• Low Finned Tubes

The fin profile is rolled or machined directly from the base tube wall, so the fin is integral with the tube rather than a separate attached component. Used in shell-and-tube exchangers, reboilers and condensers where a moderate surface-area increase over plain tube is sufficient.

• High Finned Tubes

Taller fins for a greater surface-area increase within the same shell volume, used where maximum heat transfer area is needed and airside pressure drop can be accommodated.

• Elliptical Fin Tubes

An oval tube profile that reduces airside pressure drop and wake turbulence compared to round-tube fin configurations, useful in compact air-side layouts.

• Stud Type Finned Tubes

Short studs rather than continuous fins, welded to the tube surface. Suited to high-radiation environments such as fired heaters and waste heat boiler radiant sections, where continuous fins would be damaged by direct radiant heat or heavy fouling.

Fins can be manufactured in materials including stainless steel, carbon steel, Inconel, Monel, Hastelloy, copper-nickel and other alloys, matched to your process and corrosion requirements.

Finned Tubes Specification

Send us the tube OD, fin height, fin pitch, finning length and material grade for your project and we will confirm what can be supplied against your bundle drawing.

How to Choose the Right Finned Tube Type

The right configuration depends on the process rather than on price alone. As a starting checklist:

• Confirm which side is the gas side. Fins add value on the outside surface only when the outside fluid is a gas — air or flue gas. Where both sides carry liquid, the benefit of fins is marginal and a bare tube is usually the better choice.
• Match fin type to operating temperature and fouling. Tension-wound types (L, LL, KL) suit lower, cleaner-air duty; embedded and extruded types suit higher, moderately fouling duty; welded and stud types suit the highest temperatures and radiant or heavy-fouling environments.
• Balance fin density against airflow resistance. More fins per inch add surface area but also add resistance to airflow; the right density depends on the exchanger's thermal duty and the allowable pressure drop, and should be confirmed at enquiry stage.
• Plan for cleaning access. Dust and debris collect between fins in air-cooled service over time; wider fin spacing is more tolerant of this than tightly packed fins, particularly in dusty or coastal sites.
• Confirm base tube and fin material together. Base tube grade is set by the process fluid and temperature; fin material and coating should be checked against the outside environment to avoid galvanic corrosion between dissimilar metals.

Share your tube specification, fin type preference and operating conditions with our team and we will confirm the right configuration for your project.

Finned Tube Applications

Finned tubes from Solitaire Overseas are supplied across a range of industries:

• Food Processing Industry
• Fabrication Industry
• Oil and Gas Industry
• Chemical Industry
• Plumbing
• General Purpose Applications
• Heating
• Water Supply Systems
• Power Plant
• Paper & Pulp Industry

Why Choose Solitaire Overseas as Your Finned Tubes Manufacturer in India

Solitaire Overseas is an Aramco approved finned tubes manufacturer supplying stainless steel, carbon steel and alloy steel tubes that meet national and international standards, with custom sizing and hydro testing carried out before dispatch. If your project also calls for bare heat exchanger and condenser tubes alongside finned sections, we supply both from a single source. Our approvals are listed on the Certificates page.

We deliver finned tubes worldwide, with sales representatives across Saudi Arabia, Kuwait, Qatar, Turkey, Kazakhstan, Greece, Oman, Yemen, UAE, Singapore, Thailand, Indonesia, Iran, South Africa, South America, Vietnam, Taiwan, Romania, Brazil, Egypt, Philippines, Malaysia, Australia and Germany. Enquiries are answered within 24 hours; our team is available 9:00 AM to 7:00 PM, all days.