Stainless Steel Low Fin Tube
Stainless Steel Low Finned Tubes for Heat Exchangers, Condensers, Evaporators and Industrial Cooling Equipment
GAOFA TECH is a stainless steel low fin tube manufacturer and supplier. Our own welded-tube factory can produce stainless low fin tubes (also called SS low fin tubes) using welded stainless steel base tubing for heat exchangers, condensers and evaporators. We review 304, 304L and 316L requirements against the drawing, base tube dimensions and fin geometry before confirming production.
Manufacturing route: Welded-base low fin tubes can be made through our welded-tube facility. Where seamless base tubing or other specialist material routes are specified, feasibility and supply are reviewed separately. See the Low Fin Tube guide for other materials.
Stainless Steel Low Fin Tube Manufacturing & Supply Scope
Our welded-tube factory supports stainless steel low fin tube manufacturing for welded-base designs. GAOFA TECH also handles technical specification review, project supply and export coordination; final dimensions depend on the grade, parent tube condition, fin design and drawing.
Other stainless grades can be reviewed according to corrosion condition, temperature, pressure and customer specification.
Common OD includes 7, 7.94, 9.52, 12.7, 15.88, 19.05, 25.4 and 38.1 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 height, pitch, root diameter and minimum remaining wall must be checked together. Reference profiles are not a guarantee of manufacturability.
What Is Stainless Steel Low Fin Tube?
A stainless steel low fin tube is an integral-finned heat transfer tube with low external fins formed from the parent tube wall. The terms stainless low fin tube and SS low fin tube refer to the same product family; SS is a common abbreviation for stainless steel.
Fin forming increases the external surface area without attaching a separate fin strip. The actual heat-transfer benefit depends on fin geometry, flow conditions, fluid properties, fouling and the equipment design—not the finned area alone.
For 304, 304L and 316L stainless grades, review the outside diameter over fins, root diameter, fin height, fin pitch and minimum remaining wall thickness together. See the general Low Fin Tube guide for comparisons with other material options.
When Stainless Steel Low Fin Tube Is Reviewed
- When copper low fin tube faces corrosion, erosion or service life concerns.
- When higher mechanical strength than copper is required in the equipment design.
- When stainless steel is preferred for medium compatibility or contamination control.
- When the buyer wants to review a more stable material option under copper price pressure.
- When condenser, evaporator or heat exchanger tube bundle replacement requires stainless material review.
- When the working condition is not severe enough to require titanium or nickel alloy.
Stainless Steel Low Fin Tube Manufacturer & Supplier
GAOFA TECH combines welded-tube manufacturing with tube specification and export support. For low fin tubing, the manufacturing route, material condition and fin-forming geometry are reviewed together rather than quoting from nominal OD alone.
Our Welded-Tube Factory
Our own welded-tube facility can manufacture stainless steel low fin tubing based on welded parent tubes. Material grade, weld condition, base wall and the required fin profile are confirmed against each order or drawing.
Check the Feasible Fin Profile
Our manufacturing review covers the starting tube size, fin OD, root diameter, fin pitch, height, minimum remaining wall and plain-end dimensions. Not every grade, wall or nominal OD supports every fin design.
Welded and Other Supply Routes
GAOFA TECH also reviews seamless-base tube requests or specialist material requirements through suitable supply routes. Documentation, agreed inspection scope, surface protection, packing and export details are clarified before order confirmation.
Production scope: In-house low fin tube manufacturing described here refers to suitable stainless steel designs using welded base tubing at our welded-tube factory. Seamless-base projects and special grades are evaluated separately; availability and geometry are subject to drawing review.
Key Review Points for Stainless Steel Low Fin Tubes
Before a stainless low fin tube design is confirmed, the material, fin-forming process, tube-sheet connection and service environment need to be checked as one specification.
Confirm 304, 316L or Other Stainless Grade
Material grade should be selected according to chloride level, water chemistry, operating temperature, corrosion history and customer specification.
Do Not Compare by Material Price Alone
Stainless steel may be reviewed as a copper alternative, but heat transfer capacity, wall thickness, fin geometry and pressure drop must also be checked.
Plain End and Expansion Area Matter
Plain end length, tube sheet connection, expansion, rolling or welding method should be confirmed before production.
Review OD, Root Diameter and Fin Depth
Outer diameter over fins, root diameter, fin or groove depth and fin density affect heat transfer area and tube bundle assembly.
Check Chloride and Crevice Conditions
Stainless steel is not always suitable for high chloride or seawater service. Titanium or other alloy options may be required.
New Design vs Replacement Project
Replacement projects should provide the original tube drawing, material, failure mode, tube sheet details and required performance target.
Applications of Stainless Steel Low Fin Tubes
Stainless steel low fin tubes are mainly reviewed where heat transfer enhancement and stainless steel material performance are both required.
Shell and Tube Heat Exchangers
Used where external surface area enhancement and stainless steel material performance are required in shell and tube heat exchanger designs.
Condensers
Stainless low fin condenser tubes can be reviewed when cooling water condition, tube bundle design and cleaning method are suitable.
Evaporators
Used in selected evaporator and refrigeration equipment where stainless steel material and low fin geometry are required.
Refrigeration Equipment
Can be reviewed for industrial refrigeration condensers, evaporators and cooling equipment according to refrigerant and system design.
Industrial Cooling Systems
Reviewed for industrial cooling applications where water quality, strength, corrosion risk and service life need stainless steel evaluation.
Replacement Tube Bundles
Can be reviewed for replacement tube bundles when original tube material, tube OD, wall thickness, fin geometry and failure history are known.
Copper Replacement Review
Stainless steel low fin tube may be reviewed as an alternative to copper low fin tube when corrosion, strength or price pressure becomes important.
Water Cooling Equipment
Suitable for selected water cooling applications where water chemistry, chloride level and temperature support stainless steel use.
Industrial Heat Transfer
Reviewed for process cooling and industrial heat transfer equipment according to working medium and equipment design.
How to Select Stainless Steel Grade for Low Fin Tubes
The stainless steel grade should be selected according to working medium, chloride level, temperature, pressure, corrosion history, cleaning method, fabrication process and customer specification.
| Stainless Grade Direction | Common Review Application | Selection Notes |
|---|---|---|
| 304 / 304L Stainless Steel Low Fin Tube | General heat exchangers, condensers, evaporators and industrial cooling equipment with limited aggressive corrosion risk. | Review water chemistry, chloride level, temperature and cleaning method. 304 / 304L should not be used blindly in chloride-rich conditions. |
| 316L Stainless Steel Low Fin Tube | Cooling water, refrigeration, condenser and evaporator applications requiring better corrosion resistance than 304. | 316L may be reviewed when chloride exposure exists, but chloride level, temperature and crevice risk must still be checked. |
| 321 Stainless Steel Low Fin Tube | Selected high-temperature or welded fabrication review where stabilized stainless steel is required by specification. | Use only when temperature, fabrication or customer specification supports 321 selection. |
| 904L Stainless Steel Low Fin Tube | Selected corrosion-resistant applications where stronger corrosion resistance than 304 / 316L is required. | Review medium, acid, chloride, temperature, availability and cost before selection. |
| Duplex Stainless Steel Low Fin Tube | Selected higher-strength or chloride-related applications where duplex stainless steel is specified. | Review forming feasibility, welding, tube sheet connection, corrosion condition and customer approval. |
| Other Stainless Steel Grades | Project-specific grades according to drawing, standard or end-user specification. | Please provide grade, standard, tube drawing, working medium, temperature, pressure and corrosion condition for review. |
Stainless Steel Low Fin Tube vs Copper Low Fin Tube
Many heat exchanger, condenser and evaporator buyers compare stainless steel low fin tubes with copper or copper alloy low fin tubes. This comparison should review both material performance and heat transfer design.
| Comparison Item | Copper / Copper Alloy Low Fin Tube | Stainless Steel Low Fin Tube |
|---|---|---|
| Thermal Conductivity | High thermal conductivity and widely used in many HVAC, refrigeration and heat exchanger designs. | Lower thermal conductivity than copper, so fin geometry, wall thickness, surface area and equipment design should be reviewed carefully. |
| Corrosion Resistance | Suitable in many clean water and HVAC conditions, but may face corrosion or erosion in some media. | Can provide better corrosion resistance in selected industrial water and process conditions, depending on stainless grade and working medium. |
| Mechanical Strength | Lower strength compared with many stainless steel options. | Higher mechanical strength can be useful for selected industrial equipment and tube bundle replacement projects. |
| Media Compatibility | May require review for ammonia, certain process fluids, contamination-sensitive systems or corrosive water. | Can be reviewed where stainless steel material compatibility is preferred, subject to corrosion and heat transfer evaluation. |
| Cost and Market Pressure | Copper price fluctuation may affect project cost and replacement decisions. | May be reviewed when buyers want an alternative material under copper price pressure, but total equipment performance must be checked. |
| Replacement Risk | Original equipment may already be designed around copper thermal performance. | Replacement is not automatic. Heat transfer capacity, pressure drop, tube layout, wall thickness, fin geometry and customer approval should be reviewed. |
When Titanium Low Fin Tube Should Be Reviewed Instead
Stainless steel low fin tubes are suitable for many industrial heat exchanger, condenser and evaporator applications, but they should not be used as a universal solution for all corrosive media.
Titanium low fin tube should be reviewed when the equipment handles seawater, chloride-rich water, brine, marine cooling water, corrosive cooling water or chemical media where stainless steel may face pitting, crevice corrosion or shortened service life.
If the project involves seawater cooling, marine condensers or strong chloride conditions, buyers should compare stainless steel and titanium according to corrosion risk, service life target, tube sheet material, galvanic corrosion, fabrication and total equipment cost.
- The working medium is seawater, brine or chloride-rich water.
- Past stainless steel tubes failed due to pitting or crevice corrosion.
- The equipment is used in marine cooling or coastal industrial cooling.
- The buyer needs longer service life under corrosive cooling conditions.
- The end user specification already requires titanium or equivalent corrosion resistance.
- The total cost of leakage, shutdown or replacement is higher than material upgrade cost.
Stainless Steel Low Fin Tube Specification Information
Stainless steel low fin tube quotation depends strongly on base tube size and fin geometry. Please provide drawings whenever possible.
| Specification Item | GAOFA TECH Review Direction | Why It Matters |
|---|---|---|
| Stainless Steel Grade | 304, 304L, 316L and other stainless grades by project review. | Grade affects corrosion resistance, strength, forming, cost and delivery feasibility. |
| Base Tube / Manufacturing Route | Welded-base stainless low fin tubes: manufacturing through our welded-tube factory. Seamless-base designs: separate supply and feasibility review. | Weld condition, base material, deformation during fin forming, minimum wall and inspection scope depend on the selected route. |
| Tube OD | 7 mm, 7.94 mm, 9.52 mm, 12.7 mm, 15.88 mm, 19.05 mm, 25.4 mm, 38.1 mm and other project-specific sizes by review. | Tube OD affects tube bundle 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 grade, 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 remaining wall condition, strength and heat transfer geometry. |
| Fin Height / Profile Depth | Specify fin height and root diameter from the drawing. Profiles around 0.5–1.5 mm may be reviewed, but achievable geometry is grade-, size- and process-dependent. | Affects external surface area and the minimum remaining wall. Fin height and groove depth must be defined according to the drawing convention. |
| 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 Stainless Steel Low Fin Tubes
For factory-made welded low fin tubes or separately sourced seamless-base designs, inspection should cover the parent tube and the finished fin geometry. Material documentation and any NDT or pressure testing are defined by the applicable requirements and confirmed order.
| Inspection Item | Purpose | Buyer Notes |
|---|---|---|
| Material Verification | Confirm stainless steel 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 outside diameter over fins, root diameter, fin height, fin pitch, fin surface and minimum remaining wall where specified. | 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. | Stainless 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 inspection and quality-control examples relevant to tube supply, including material identification, OD and wall measurement, visual checks, applicable non-destructive testing and packing review. The agreed inspection plan depends on the production route and specification.
Information Needed for a Stainless Steel Low Fin Tube Quotation
As a stainless steel low fin tube manufacturer and supplier, GAOFA TECH can review welded-base tube manufacturing requirements alongside other project-specific supply routes. Start with the material grade, tube form, OD × wall thickness × length, quantity and application.
For custom low fin tubes, drawings showing the final fin OD, root diameter, pitch, finned length and plain ends are especially useful. If a drawing is not ready, GAOFA TECH can review the available dimensions first.
Material Grade: Tube Form: Size: OD × Wall Thickness × Length Quantity: Application:
For low fin tubing, attach a drawing or add fin OD, root diameter, fin height, FPI, finned length and plain-end dimensions if available.
Best RFQ practice: Please send a drawing or sample specification whenever possible. Stainless steel 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.
- Stainless steel grade: 304, 304L, 316L or other stainless grade
- 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, 38.1 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 stainless grade 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, industrial cooling or replacement tube
- Working medium, refrigerant, water chemistry, chloride level, temperature and pressure
- Tube sheet connection: expansion, welding, rolling, brazing or other method
- For copper replacement: original copper tube drawing, material, failure mode and required performance target
- Inspection requirement: dimensional, visual, PMI, eddy current, pneumatic, hydrostatic or other test
- Packing requirement, destination, Incoterms and expected delivery schedule
Send Your Stainless Steel Low Fin Tube Requirement
Send your grade, welded or seamless base tube requirement, OD × wall thickness × length, quantity and application. A fin profile drawing helps us confirm whether the design fits our welded-tube manufacturing route or needs an alternative supply review.
Stainless Steel Low Fin Tube FAQ
What is stainless steel low fin tube?
Stainless steel low fin tube is an integral-finned stainless steel heat transfer tube. Its low external fins are formed from the tube wall to increase surface area for selected condensers, evaporators and heat exchanger designs.
Are stainless low fin tube and SS low fin tube the same product?
Yes. In industrial tube terminology, SS commonly means stainless steel. Stainless low fin tube, SS low fin tube and stainless steel low fin tube refer to the same material-and-profile family. The exact grade, base tube form, fin geometry and dimensions still need to be specified.
What stainless steel grades can be reviewed for low fin tubes?
Common grades include 304, 304L and 316L. Other stainless grades such as 321, 904L or duplex stainless steel can be reviewed according to working medium, temperature, pressure, corrosion condition and customer specification.
What tube OD can GAOFA TECH review for stainless steel low fin tubes?
GAOFA TECH can review stainless steel 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, 25.4 mm and 38.1 mm. Other sizes can be reviewed according to grade, base wall thickness, drawing and production feasibility.
What base wall thickness is commonly used?
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 stainless grade, tube OD, fin / groove depth, pressure and application.
What fin or groove depth can be reviewed?
Fin profile dimensions around 0.5–1.5 mm may be reviewed for selected designs, but this is not a standard guaranteed range. Fin height, groove depth, root diameter and minimum remaining wall must be defined consistently and checked against the starting tube and forming process.
Can stainless steel low fin tube replace copper low fin tube?
Stainless steel low fin tube may be reviewed as an alternative to copper low fin tube when corrosion resistance, mechanical strength, contamination control, media compatibility, service life or copper price pressure becomes important. Replacement suitability depends on heat transfer requirement, working medium, fin geometry, wall thickness and equipment design.
Use the Copper Tube Replacement Review for broader material selection and the stainless steel vs copper heat exchanger guide for the underlying thermal and mechanical review.
Is stainless steel low fin tube better than copper low fin tube?
Not always. Stainless steel can offer higher strength and selected corrosion resistance, while copper has higher thermal conductivity. The better choice depends on heat transfer design, corrosion risk, working medium, pressure, temperature, service life target and total equipment cost.
When should titanium low fin tube be considered instead of stainless steel?
Titanium low fin tube should be considered when the application involves seawater, chloride-rich water, brine, marine cooling water, corrosive cooling water or chemical media where stainless steel may face pitting or crevice corrosion risk.
Is GAOFA TECH a stainless steel low fin tube manufacturer or supplier?
Both. GAOFA TECH can manufacture stainless steel low fin tubes through our own welded-tube factory when welded base tubing is suitable for the specified design. We also supply project-specific low fin tubing through other reviewed routes. Grade, OD, wall, fin geometry and inspection requirements are confirmed before quotation.
Can GAOFA TECH supply both welded and seamless stainless low fin tubes?
Our own factory supports low fin tube production using suitable welded stainless steel base tubing. If the specification calls for a seamless base tube, GAOFA TECH can review feasibility and supply through a separate manufacturing route. Neither route is automatically suitable for every grade, dimension or fin profile.
What information is needed before quotation?
Please provide stainless steel 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 stainless steel low fin tubes?
Yes. Drawings are strongly recommended because 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.