Stainless Steel Alloy Steel Serrated Finned Tube
Stainless steel alloy steel serrated finned tubes are high-efficiency heat transfer elements engineered for severe operating conditions. They are specifically designed to perform under extreme environments, including high temperatures, high pressures, heavy corrosion, high viscosity, or heavy fouling.
- Base Tube Outer Diameter (OD): 15.88 mm to 273 mm
- Tube wall thickness: 1.5-20mm, weldable steel pipe length supports customization from 0.5-30m.
- Fin Height: 6.35 mm to 38.1 mm
- Fin Thickness: 0.8 mm to 2.5 mm
- Serration Width / Pitch: Commonly 4 mm, 5 mm, 8 mm (customizable based on pressure drop requirements)
- Fin Density / Pitch: 3 to 10 fins per inch (FPI)
Datang-Stainless Steel Alloy Steel Serrated Finned Tube Manufacturer
Compared to solid (continuous) helical finned tubes, the stainless steel alloy steel serrated finned tube features regularly spaced teeth cut along the fin edges. This structure substantially disrupts the thermal boundary layer of the fluid over the fin surface, significantly enhancing turbulence and heat transfer efficiency.
Datang’s HFW helical spiral serrated finned tubes can reach a maximum length of 30 meters, surpassing current industry manufacturing length limits.
Stainless Steel Alloy Steel Serrated Finned Tubes Technical Advantages
| Performance Dimension | Technical Advantage |
| Heat Transfer Efficiency | The serrated structure induces strong fluid turbulence, disrupting the thermal boundary layer and boosting the heat transfer coefficient by 15% to 30% compared to equivalent solid fins. |
| Anti-Fouling & Self-Cleaning | Turbulence generated between the serrations prevents ash, soot, and particulate matter from adhering, significantly reducing fouling thermal resistance. |
| Thermal Stress Resistance | The segmented fin structure relieves circumferential thermal stress during rapid heating and cooling cycles, preventing fin cracking or detachment. |
| Welding Integrity | Produced primarily via High-Frequency Welding (HFW) or Laser Welding, ensuring a 100% metallurgical bond between the fin root and the base tube. |
High-Frequency Welded Serrated Finned Tube
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Stainless Steel Alloy Steel TubeSeamless tubes or welded tubes (ERW/Welded) made of stainless steel (such as 304, 316L, 321) and alloy steel (such as P11, P22, 15CrMo).With outstanding mechanical strength and excellent corrosion resistance, it can withstand high-temperature and high-pressure conditions as well as complex chemical environments, substantially prolonging the operating lifespan of the equipment.
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Serrated Finned Tube-Serrated Fin StripBy creating intense fluid turbulence (such as flue gas or air) outside the tubes through serrated cuts while expanding the external heat transfer surface area, it boosts the heat transfer coefficient by over 15% to 20% compared to standard solid finned tubes.
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Serrated Finned Tube Head Metal SheathThe spot-welded galvanized sleeve at the tube end serves as a protective and installation aid, ensuring smooth tube insertion, protecting fins from deformation, and preventing jamming during assembly.
Fin Serrating Machine
Equipped with advanced servo drive systems, the state-of-the-art Fin Serrating Machine offers adjustable pitch and tooth depth, allowing precise customization of fin segment width, tooth depth, and serration spacing to meet customer requirements.
Advanced Production Equipment
The fin serrating machine is typically integrated into the HFW (High Frequency Welded) fin tube production line to achieve continuous, automated production. Following the serration process, the cut steel strip is immediately spirally wound around the base tube and continuously high-frequency welded onto its outer wall.
Customizable Serrated Fin Tube
We can customize the material, specification and length according to your requirements.Solve your problems anytime and anywhere. Customize fin tubes and equipment according to your needs. Provide free technical guidance. Welcome to customize with drawings, so that you can purchase without worries.
Difference Between Serrated Fins Vs. Solid Fins
1. Helical serrated finned tube, the serrated fin is a steel strip that has been serrated or cut, then helically wound and weld around the base tube. Others are same as high frequency welded solid finned pipes.
2. Serrated finned tubes can achrive more tight fin pitch.
3. Serrated finned tubes have greater disturbing effect on the gas outside the tube than the solid finned tube, which increases the gas flow speed, makes the gas flow effectively in the turbulent state, and effectively enhances the heat transfer effect.
4. In the case of large gas pressure drop, generally the serrated finned tube can effectively achieve the desired effect.
5. This structure is often used in boiler economizers and flue gas waste heat recovery equipment.
Serrated Fin Tube Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
Serrated Fin Tube Quality Checks
Each of our welded serrated fin tube is subjected to stringent quality checks.Inspection and Tests Performed:
1.Chemical Composition inspection。
2.Mechanical Properties Test(Tensile Strength, Yield Strength, Elongation, Flaring, Flattening, Hardness, Impact Test).
3.Surface and Dimension Test.
4.No-destructive Test.
5.Hydrostatic Test.
Case Study
Discover how Datang Finned Tube delivered high-efficiency serrated finned tubes (Fin OD: 76mm, Pitch: 3.8mm, Thickness: 1.2mm) for a Turkish thermal project. Check out our strict QC inspection and secure bulk loading process.
Serrated Finned Tube Application
In the pharmaceutical production process, high temperature and high pressure reactions will generate a lot of waste heat. The application of serrated finned tubes can help pharmaceutical companies recover this waste heat and reuse it in other processes to achieve energy recycling.
In waste heat recovery, serrated fin tubes convert waste heat into usable energy, such as steam and electricity, through the heat exchange effect of serrated fin tubes, thus improving energy utilization efficiency.
HFW serrated finned tubes are widely used in waste heat recovery systems and cooling systems of power station boilers. For example, in waste heat recovery devices in the petrochemical, power and other industries, HFW serrated fin tubes can maximize waste heat recovery and improve the overall energy efficiency of the system. In terms of specific data, the energy efficiency of boiler systems using HFW serrated fin tubes can be improved by 10%-15% compared to traditional systems, and maintenance costs can be reduced by about 20%.
The application of high-frequency welded serrated fin tubes in wood drying has significant advantages and characteristics. High-frequency welding technology enables a seamless connection between the fins and the base tube, improves heat conduction efficiency, and enhances the pressure resistance and corrosion resistance of the fin tube, thereby performing well during the wood drying process.
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Stainless Steel Alloy Steel Serrated Finned Tube FAQs
A: Serrated fin tube production line 8.
A: We can provide HFW serrated finned tube samples for free.
A: After you confirm high frequency welded serrated fin pipe sample details, the samples will be ready for delivery in 3-7days,and will be sent to you via express and arrive in 3-5days.
A: Serrated finned tube can be customized, we can make the new thermoforming or extruding mode based on your drawings and we can sign a confidentiality agreement about your patented product, pls contact us for any further information.
A: Always a pre-production sample,before mass production;always final inspection before shipment.
Inspection & Guarantee Certificate is supplied with shipment, and the Third Party Inspection is available.