Serrated Fin Tube Suppliers in China
What is HFW serrated finned tube?
HFW Serrated Finned Tubes short for high frequency welded helical spiral serrated finned tube. HFW Serrated Finned Tubes is a spiral spiral finned tube formed by welding the base tube and the steel strip on the tube surface together with high frequency welding technique, However the fin strip is serrated before welding. The High Frequency Welded Serrated Fin Tube is one kind of tubular type efficient heat transfer element having serrated fins. It has the characteristics of long life, wide temperature range and high pressure tolerance.
How to produce high frequency welded serrated fin tube?
The steel fin is helically wound and continuously welded to the tube by high frequency electric resistance welding(HFERW). Before the fin strip is serving to the welding machine, it will be serrated first, the rest of process is as same as welding the solid fin tubes.
Quality control for serrated fin tube
The quality of the serrated fin tube is assured by hydrostatic or pneumatic testing, eddy current testing and tensile testing to verify the mechanical bond between the inner tube and the outer fins
Delivery condition:
Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with Anti-rust at both ends of high frequency welded spiral fin tube.
HFW Serrated Finned Tube Size and Material:
| Tube O.D.: | 16 to 273 (mm) | 3/8” to 10”(NPS) |
| Tube Wall Thk.: | 2 to 28.6 (mm) | 0.08” to 1.1” |
| Tube Length: | ≤28,000 (mm) | ≤92 ft |
| Fin Thk.: | 0.5 to 3.5 (mm) | 0.02” to 0.14” |
| Fin Height: | 8 to 35 (mm) | 0.31” to 1.3” |
| Fin Pitch: | 3 to 333 FPM | 1 to 8 FPI |
| Fin Type: | Solid, “U”or“V” Serrated | |
| Fin Material: | C.S. (most common grade: 08F, SPCC)
S.S. (most common grade are AISI 304, 316, 409, 410, 321,347 ) |
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| Tube Material: | C.S. (most common grade: A106 Gr.B, A210, A192)
S.S. (most common grade are TP304, 316, 321, 347 ) A.S.(most common grade are T/P5,9,11,22,91 ) Duplex Steel(most common grade are 2205 etc. ) |
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| * This table is used as a general guide to our capabilities, please call us for any other customized cases. | ||
High Frequency Welded Serrated Fin Tube Material
The base tube is made of Carbon Steel Tube(A106 Gr.B, A210, A192),the fins carbon steel(08F, SPCC)
The base tube is made of stainless steel tube(TP304, 316, 321, 347),the fins carbon steel(08F, SPCC)
The base tube is made of stainless steel tube(TP304, 316, 321, 347),the fins stainless steel(AISI 304, 316, 409, 410, 321,347)
High frequency welded serrated fin tube,the base tube is made of alloy steel tube,the fins carbon steel(08F, SPCC)
High Frequency Welded Serrated Finned Tube By Industy
Serrated Finned Tube is a new,wear-resistant and high-efficiency heat-exchange material. It is a high-efficiency and energy-saving heat-exchange element. It is widely used in waste heat recovery, petrochemical, power station boilers, economizers, passenger cars, industrial and civil building heating and refrigeration.Medicine drying, wood drying, grain drying systems and other industries.
Serrated Spiral Finned Tube By Application
Serrated fin tubes are widely used in heat exchangers, radiators, and energy-saving equipment, ensuring optimal heat exchange. They can be used in boiler systems, heating furnaces, cooling towers, and other equipment to improve energy efficiency. They are also used in chemical reactors, distillation towers, condensers, and other equipment to meet the heat exchange requirements of various process conditions.
Top Features of Serrated Fin Tube
Datang offers the widest variety of sizes available for serrated fin tube in the industry.Its heat exchange efficiency can reach several times or even dozens of times that of ordinary heat exchangers.
1. Under the same heat transfer medium environment, Serrated fins greatly increase the contact probability of high-temperature flue gas and fins compared with solid fin
2. Correspondingly improve the heat transfer effect of fins, with an average heat transfer coefficient of 5-13 percentage points higher.
3. Due to the serrated of fins, the flow area of flue gas and wind tunnel effect are increased, the pressure difference on both sides of fins is reduced, and the resistance of open fin tubes is about 20% lower, which improves the heat transfer efficiency.
4. Improve the function of preventing ash deposition.
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 Spiral Fin Tube and Serrated Fin Tube
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.
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 fin 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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Serrated Fin 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.