Low Fin Tube
Stainless Steel and Titanium Low Fin Tubes for Heat Exchangers, Condensers and Evaporators
GAOFA TECH supplies low fin tubes mainly in stainless steel and titanium materials for shell and tube heat exchangers, condensers, evaporators, refrigeration equipment, industrial cooling systems and corrosion-resistant heat transfer applications.
Copper low fin tubes are widely used in the market. Stainless steel and titanium low fin tubes are increasingly reviewed when customers need better corrosion resistance, higher mechanical strength, longer service life, improved material compatibility or alternatives to copper alloy tubes under specific working conditions.
Low Fin Tube Supply Scope
This page is designed for buyers searching for low fin tube, low finned tube, low fin heat exchanger tube, condenser low fin tube, evaporator low fin tube, stainless steel low fin tube, titanium low fin tube and low fin tube supplier for heat transfer equipment.
GAOFA TECH mainly reviews stainless steel and titanium low fin tubes according to medium, corrosion and equipment requirements.
Common OD includes 7, 7.94, 9.52, 12.7, 15.88, 19.05 and 25.4 mm, with other sizes reviewed by project.
Common base wall thickness includes 1.0, 1.1, 1.2, 1.5, 1.8 and 2.0 mm.
Fin or groove depth should be reviewed according to material, tube base wall thickness and fin forming feasibility.
What Is a Low Fin Tube?
A low fin tube, also called a low finned tube, is a heat transfer tube with external fins formed on the outside surface of the base tube. Compared with a smooth tube of the same nominal size, a low fin tube can provide more external surface area for heat transfer.
Low fin tubes are commonly reviewed for shell and tube heat exchangers, condensers, evaporators, refrigeration equipment and industrial cooling systems, especially when the equipment design needs higher outside-tube surface area without changing the entire heat exchanger structure.
GAOFA TECH focuses mainly on stainless steel low fin tubes and titanium low fin tubes. Common tube OD includes 7, 7.94, 9.52, 12.7, 15.88, 19.05 and 25.4 mm, and common base wall thickness includes 1.0, 1.1, 1.2, 1.5, 1.8 and 2.0 mm. Fin or groove depth is generally reviewed from 0.5 to 1.5 mm according to material and base wall thickness.
Low Fin Tube Is a Heat Transfer Design, Not Just a Material Choice
- The base tube material should match corrosion and mechanical requirements.
- The fin geometry should match heat transfer requirement and pressure drop review.
- The fin side and smooth side should be confirmed according to fluid flow design.
- Tube expansion, welding, bending or assembly process must be checked.
- Low fin tubes should be reviewed together with condenser, evaporator or heat exchanger design.
- Replacing copper low fin tube with stainless steel or titanium should be evaluated by the full working condition.
Low Fin Tube Product Directions
Low fin tubes can be reviewed by material, base tube type, tube OD, wall thickness, fin geometry, application and working medium. GAOFA TECH mainly focuses on stainless steel and titanium low fin tube directions.
| Product Direction | Typical Review Application | Buyer Notes |
|---|---|---|
| Stainless Steel Low Fin Tube | Heat exchangers, condensers, evaporators, refrigeration equipment, industrial cooling systems and selected replacement projects. | Review stainless grade, tube OD, base wall thickness, fin or groove depth, water chemistry, chloride level, operating temperature and equipment specification. |
| Titanium Low Fin Tube | Seawater cooling, marine condensers, corrosive cooling water, chemical heat exchangers and corrosion-resistant condenser applications. | Often reviewed where corrosion resistance is more important than material cost. Please confirm medium, chloride level, temperature, pressure and fin geometry. |
| Low Fin Heat Exchanger Tube | Shell and tube heat exchangers where outside surface area enhancement is required. | Confirm which side requires heat transfer enhancement, tube layout, baffle design, fouling risk and cleaning method. |
| Low Fin Condenser Tube | Condensers where low fin geometry may improve condensation-side or shell-side heat transfer depending on design. | Review medium, condensing side, fouling, cleaning, tube expansion, tube sheet connection and vibration risk. |
| Low Fin Evaporator Tube | Evaporators and refrigeration equipment where enhanced heat transfer is required. | Review refrigerant, evaporation condition, pressure drop, oil return, fouling and system design. |
| Copper Low Fin Tube Replacement Review | Projects where copper alloy low fin tubes are being compared with stainless steel or titanium due to corrosion, strength, contamination or service life concerns. | Replacement should not be based on material name only. Thermal conductivity, heat transfer area, corrosion and fabrication should be reviewed together. |
How to Select Stainless Steel or Titanium Low Fin Tube
Low fin tube selection should consider both material performance and heat transfer design. Stainless steel and titanium are reviewed for different corrosion, strength, cost and service life requirements.
| Material Direction | Common Review Direction | Selection Notes |
|---|---|---|
| 304 / 304L Stainless Steel Low Fin Tube | General heat exchanger, condenser, evaporator and industrial cooling applications with limited aggressive corrosion risk. | Review water chemistry, chloride level, temperature, cleaning method and corrosion history before selection. |
| 316L Stainless Steel Low Fin Tube | Cooling water, refrigeration, condenser and evaporator applications requiring better corrosion resistance than 304. | 316L may be reviewed where chloride risk exists, but suitability still depends on chloride level, temperature and crevice condition. |
| Other Stainless Steel Low Fin Tube | Project-specific grades such as 321, 904L, duplex stainless steel or high-temperature stainless grades by review. | Please provide grade, standard, medium, temperature, pressure, corrosion condition and heat exchanger design requirement. |
| Titanium Low Fin Tube | Seawater, brine, marine cooling, chloride-rich water, chemical cooling and corrosion-resistant heat exchanger applications. | Titanium should be reviewed when corrosion resistance is critical. Suitability depends on medium, temperature, pH, crevice condition and galvanic design. |
| Copper Alloy Low Fin Tube | Common market material for many HVAC, refrigeration and heat exchanger applications. | GAOFA TECH focuses mainly on stainless steel and titanium. Stainless or titanium may be reviewed when copper is not suitable due to corrosion, strength or service requirements. |
| Nickel Alloy or Other Materials | Special corrosion or high-temperature projects where stainless steel and titanium may not be sufficient. | Review case by case according to material grade, production feasibility, medium and customer specification. |
Stainless Steel vs Titanium vs Copper Low Fin Tube
Many heat exchanger, condenser and evaporator buyers compare copper, stainless steel and titanium low fin tubes before confirming a material. The correct choice depends on heat transfer performance, corrosion risk, strength, service life, fabrication process and total equipment cost.
| Material Direction | Main Advantages | Typical Review Conditions | Selection Caution |
|---|---|---|---|
| Copper / Copper Alloy Low Fin Tube | High thermal conductivity, mature use in HVAC and refrigeration, established heat transfer design references and wide market use. | Clean water, HVAC, refrigeration, non-aggressive cooling systems and cost-sensitive heat transfer equipment where copper is accepted. | May need review when corrosion, erosion, ammonia, seawater, contamination, mechanical strength or copper price pressure becomes important. |
| Stainless Steel Low Fin Tube | Higher mechanical strength than copper, selected corrosion resistance, stable material option and suitability for many industrial heat exchanger applications. | Condensers, evaporators, industrial cooling, refrigeration, stainless tube bundle replacement and copper replacement review. | Thermal conductivity is lower than copper. Heat transfer design, fin geometry, base wall thickness, pressure drop and equipment layout should be reviewed. |
| Titanium Low Fin Tube | Strong corrosion resistance in seawater, chloride-rich water and many corrosive cooling conditions; useful for marine and chemical heat exchanger applications. | Seawater cooling, marine condensers, brine, chloride-rich water, corrosive cooling water and chemical heat exchangers. | Material cost is higher. Design should review galvanic corrosion, crevice condition, tube expansion or welding, and end-user approval. |
| Nickel Alloy / Other Alloy Low Fin Tube | Possible option for special corrosive or high-temperature conditions where stainless steel or titanium may not be sufficient. | Severe chemical corrosion, high-temperature corrosive service or special customer specification. | Usually project-specific. Feasibility, cost, material availability and production route should be confirmed case by case. |
Low Fin Tube vs Smooth Tube vs Inner Grooved Tube
Low fin tubes, smooth tubes and inner grooved tubes serve different heat transfer purposes. The correct choice depends on which side needs enhancement, the working fluid, pressure drop, fouling, cleaning and equipment design.
| Tube Type | Heat Transfer Feature | Common Review Application |
|---|---|---|
| Smooth Tube | No special external or internal enhancement. Easier to specify, clean and fabricate in many standard applications. | General heat exchangers, heating elements, condensers, evaporators and process equipment where standard tube surface is sufficient. |
| Low Fin Tube | External low fins increase outside surface area and may improve outside-tube or shell-side heat transfer in selected designs. | Shell and tube heat exchangers, condensers, evaporators, refrigeration equipment and industrial cooling equipment. |
| Inner Grooved Tube | Internal grooves increase internal surface area and may improve internal fluid turbulence and refrigerant-side heat transfer. | Refrigeration, evaporators, condensers and enhanced heat transfer coils where internal flow enhancement is required. |
| Low Fin + Material Upgrade | Combines external surface enhancement with stainless steel or titanium corrosion resistance. | Projects reviewing copper replacement, seawater cooling, corrosive water, chemical cooling or longer service life requirements. |
Applications of Low Fin Tubes
Low fin tubes are mainly used in heat transfer equipment where external surface area and tube material selection need to be reviewed together.
Shell and Tube Heat Exchangers
Low fin tubes may be reviewed for shell and tube heat exchangers where outside surface area enhancement is required.
Condensers
Low fin condenser tubes are reviewed when condenser design, medium and cleaning method allow low fin tube use.
Evaporators
Low fin evaporator tubes may be reviewed for refrigeration and heat transfer systems according to refrigerant and equipment design.
Refrigeration Equipment
Low fin tubes may be used in industrial refrigeration, evaporator and condenser equipment where enhanced heat transfer is required.
Seawater Cooling
Titanium low fin tubes can be reviewed for seawater cooling and marine condenser applications where corrosion resistance is important.
Industrial Cooling Systems
Stainless steel or titanium low fin tubes may be reviewed for industrial cooling systems depending on water quality and corrosion risk.
Chemical Cooling
Low fin tubes may be reviewed for selected chemical cooling and corrosive heat exchanger applications according to medium and temperature.
Material Replacement Projects
Stainless steel and titanium low fin tubes may be reviewed when customers compare copper alloy, stainless steel and titanium options.
Replacement Tube Bundles
Low fin tubes may be reviewed for replacement tube bundles when original tube material, size and fin geometry are confirmed.
When Stainless Steel or Titanium Low Fin Tube Is Reviewed Instead of Copper
Copper and copper alloy low fin tubes are common in many heat exchanger, condenser and refrigeration applications because copper has high thermal conductivity and established fabrication routes.
However, stainless steel and titanium low fin tubes may be reviewed when the buyer faces copper price pressure, corrosion failures, erosion, seawater or chloride exposure, ammonia or special media compatibility issues, contamination concerns, higher mechanical requirements or longer service life targets.
The replacement review should compare not only material price, but also heat transfer performance, corrosion risk, pressure drop, wall thickness, fin geometry, tube expansion or welding process, equipment design and total service cost.
Information Needed for Review
- Original copper or copper alloy grade and tube drawing
- Current tube OD, base wall thickness, root diameter, fin height and fin density
- Working medium, water chemistry, refrigerant or process fluid
- Operating temperature, pressure and flow condition
- Existing failure mode: corrosion, erosion, leakage, scaling or tube wear
- Heat transfer target and whether equipment design can be adjusted
Low Fin Tube Specification Information
Low fin tube quotation depends strongly on base tube size and fin geometry. Please provide drawings whenever possible. The following items should be confirmed before quotation.
| Specification Item | GAOFA TECH Review Direction | Why It Matters |
|---|---|---|
| Material Grade | Stainless steel grade, titanium grade or other material grade by project review. | Material affects corrosion resistance, strength, forming, cost and delivery feasibility. |
| Tube OD | 7 mm, 7.94 mm, 9.52 mm, 12.7 mm, 15.88 mm, 19.05 mm, 25.4 mm and other project-specific sizes by review. | Tube OD affects heat exchanger layout, tube sheet design, fin forming and replacement compatibility. |
| Base Wall Thickness | 1.0 mm, 1.1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm by material, tube size and application. | Base wall thickness affects strength, fin forming feasibility, pressure review and corrosion allowance. |
| Outer Diameter Over Fins | Maximum outside diameter after fin forming, according to drawing or equipment design. | Important for tube bundle layout, tube support, baffle clearance and equipment design. |
| Root Diameter | Diameter at the root of the low fin profile, according to drawing or sample. | Important for wall thickness review, strength and heat transfer geometry. |
| Fin / Groove Depth | 0.5 mm to 1.5 mm, depending on material and tube base wall thickness. | Affects external surface area, remaining wall condition, fin forming feasibility and heat transfer design. |
| Fin Pitch / Fin Density | Fin pitch, fins per inch or fins per meter according to drawing, sample or heat transfer design. | Affects heat transfer area, fluid flow, fouling, cleaning and manufacturing feasibility. |
| Plain Ends | Plain end length, tube end condition and tube sheet connection method. | Important for tube expansion, welding, rolling, sealing and assembly. |
| Tube Length and Quantity | Straight tube length, cut length, bundle quantity or project quantity. | Important for production planning, packing, shipping and cost calculation. |
| Inspection Requirement | Dimensional inspection, visual inspection, eddy current testing, pressure test or other requirement. | Testing scope affects production route, lead time and quotation. |
Quality Control for Low Fin Tubes
Low fin tube inspection should consider both base tube quality and final fin geometry. Inspection scope should be confirmed according to material, standard, equipment design and customer specification.
| Inspection Item | Purpose | Buyer Notes |
|---|---|---|
| Material Verification | Confirm material grade, heat number, chemical composition and traceability. | MTC, PMI and material documents can be reviewed according to order requirement. |
| Base Tube Inspection | Review tube OD, base wall thickness, straightness, surface and tube integrity before fin forming. | Base tube condition affects final fin quality and tube performance. |
| Fin Geometry Inspection | Check outer diameter over fins, root diameter, fin / groove depth, fin pitch and fin appearance. | Important for heat transfer area, assembly and tube bundle layout. |
| Plain End Inspection | Check smooth end length, end condition and transition between finned area and plain end. | Important for tube expansion, welding, rolling or sealing into tube sheet. |
| Visual Inspection | Review surface condition, fin damage, scratches, dents and handling marks. | Low fin tubes need careful handling and packing to protect fin surfaces. |
| NDT / Tightness Testing | Review tube integrity according to standard or agreed requirement. | Eddy current, pneumatic, hydrostatic or other testing should be confirmed before production. |
| Packing Review | Protect fins, plain ends and tube surface during shipment. | Bundle protection, wooden case, separators and packing photos can be discussed before shipment. |
View Tube Inspection and Quality Control Details
Review GAOFA TECH’s tube inspection examples, including PMI checking, OD inspection, wall thickness inspection, visual inspection, eddy current testing, pneumatic testing, ultrasonic testing and packing review.
Information Needed for a Low Fin Tube Quotation
A complete RFQ helps confirm material, tube OD, base wall thickness, fin geometry, tube end condition, inspection scope, packing method and quotation accuracy.
For heat exchanger, condenser, evaporator, refrigeration or copper replacement projects, please provide both tube dimensions and working condition details.
Best RFQ practice: Please send a drawing or sample specification whenever possible. Low fin tube quotation depends on tube OD, base wall thickness, outer diameter over fins, root diameter, fin / groove depth, fin density, plain end length and final application.
- Material grade: stainless steel grade, titanium grade or other material requirement
- Base tube form: welded tube, seamless tube or customer-specified tube form
- Tube OD: 7 mm, 7.94 mm, 9.52 mm, 12.7 mm, 15.88 mm, 19.05 mm, 25.4 mm or other required OD
- Base wall thickness: 1.0 mm, 1.1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm or project-specific wall thickness
- Outer diameter over fins and root diameter
- Fin / groove depth: 0.5 mm to 1.5 mm, depending on material and tube base wall
- Fin pitch, fins per inch or fins per meter
- Finned length, plain end length and total tube length
- Quantity: pieces, meters, kilograms, bundles or annual consumption
- Application: heat exchanger, condenser, evaporator, refrigeration, seawater cooling or replacement tube
- Working medium, refrigerant, water chemistry, chloride level, temperature and pressure
- Tube sheet connection: expansion, welding, rolling, brazing or other method
- Inspection requirement: dimensional, visual, PMI, eddy current, pneumatic, hydrostatic or other test
- Packing requirement, destination, Incoterms and expected delivery schedule
Send Your Low Fin Tube Requirement
Please send material grade, tube OD, base wall thickness, outer diameter over fins, root diameter, fin / groove depth, fin pitch, finned length, plain end length, quantity, application, working medium, temperature, pressure, inspection requirement and packing details. For copper replacement projects, please also send the existing copper tube drawing and failure condition if available.
Low Fin Tube FAQ
What is a low fin tube?
A low fin tube is a heat transfer tube with external low fins formed on the outside surface of the base tube. The fins increase external surface area and may improve outside-tube heat transfer in selected heat exchanger, condenser and evaporator designs.
What are low fin tubes used for?
Low fin tubes are commonly reviewed for shell and tube heat exchangers, condensers, evaporators, refrigeration equipment, industrial cooling systems, seawater cooling equipment and replacement tube bundle projects.
Does GAOFA TECH supply stainless steel low fin tubes?
Yes. GAOFA TECH can review stainless steel low fin tubes according to material grade, tube OD, base wall thickness, fin geometry, application, working medium, corrosion condition, inspection requirement and customer specification.
Does GAOFA TECH supply titanium low fin tubes?
Yes. GAOFA TECH supplies titanium low fin tubes for selected heat exchanger, condenser, seawater cooling, marine cooling and corrosion-resistant heat transfer applications according to customer specification.
What tube OD can GAOFA TECH review for low fin tubes?
GAOFA TECH can review low fin tubes with tube OD such as 7 mm, 7.94 mm, 9.52 mm, 12.7 mm, 15.88 mm, 19.05 mm and 25.4 mm. Other sizes can be reviewed according to material, base wall thickness, drawing and production feasibility.
What base wall thickness is commonly reviewed for low fin tubes?
Common base wall thickness includes 1.0 mm, 1.1 mm, 1.2 mm, 1.5 mm, 1.8 mm and 2.0 mm. The suitable wall thickness depends on material, tube OD, fin / groove depth, pressure and final application.
What fin or groove depth can be reviewed?
Fin or groove depth can generally be reviewed from 0.5 mm to 1.5 mm, depending on material and tube base wall thickness. Final feasibility should be confirmed by drawing and production review.
When should stainless steel low fin tube be selected instead of copper low fin tube?
Stainless steel low fin tube may be reviewed instead of copper low fin tube when corrosion resistance, mechanical strength, media compatibility, copper price pressure, contamination control or service life becomes important. Heat transfer design, fin geometry, base wall thickness and pressure drop should be reviewed because stainless steel has lower thermal conductivity than copper.
When should titanium low fin tube be selected instead of copper or stainless steel low fin tube?
Titanium low fin tube may be reviewed when seawater, chloride-rich water, brine, corrosive cooling water or chemical media create corrosion risks that copper or stainless steel may not handle well. Titanium selection should also review cost, galvanic corrosion, crevice condition, tube sheet connection and customer approval.
Can stainless steel or titanium low fin tubes replace copper low fin tubes?
Stainless steel or titanium low fin tubes may be reviewed as alternatives to copper low fin tubes when corrosion, strength, media compatibility, contamination, service life or copper price pressure creates a need for material review. Suitability depends on heat transfer requirement, medium, pressure, fin geometry, fabrication and equipment design.
What is the difference between low fin tube and inner grooved tube?
Low fin tube has external fins and is usually reviewed for outside-tube or shell-side heat transfer enhancement. Inner grooved tube has internal grooves and is usually reviewed for internal fluid or refrigerant-side heat transfer enhancement. The correct choice depends on fluid side, heat transfer target, pressure drop and equipment design.
Is low fin tube always better than smooth tube?
No. Low fin tube is not automatically better than smooth tube in every system. It should be reviewed according to heat transfer target, working medium, fouling, cleaning, pressure drop, fin geometry, tube layout and equipment design.
What information is needed before quotation?
Please provide material grade, tube OD, base wall thickness, outer diameter over fins, root diameter, fin / groove depth, fin pitch or fin density, tube length, plain end length, quantity, application, working medium, temperature, pressure, inspection requirement and packing details.
Should buyers provide drawings for low fin tubes?
Yes. Drawings are strongly recommended because low fin tube quotation depends on tube OD, base wall thickness, final outer diameter, root diameter, fin / groove depth, fin pitch, finned length, plain end length and assembly requirement.