In modern industrial production, heat exchange efficiency is a key factor affecting energy utilization and production cost. With the continuous upgrading of industrial technology, heat exchange systems are increasingly facing the challenges of high heat flux, compact layout and harsh working conditions, which put forward higher requirements for the performance of heat transfer components. Traditional finned tubes (such as welded finned tubes, inserted finned tubes) often have problems such as poor bonding between fin and base tube, large contact thermal resistance, easy fin falling off and low heat transfer efficiency, which are difficult to meet the efficient and stable operation needs of modern heat exchange systems.

 

Tension wound finned tubes, as an advanced high-efficiency heat transfer component, solve the defects of traditional finned tubes through the unique tension winding process. The core principle is to wind the fin strip around the outer surface of the base tube with a constant tension, relying on the elastic deformation of the fin and the plastic deformation of the base tube surface to form a tight interference fit between the fin and the base tube, eliminating the gap between the two and minimizing the contact thermal resistance. Compared with other types of finned tubes, tension wound finned tubes have the advantages of higher bonding strength, better heat transfer continuity, more compact structure and stronger resistance to vibration and thermal shock, which can effectively improve the heat transfer efficiency of the system and reduce the volume and weight of heat exchange equipment.

At present, tension wound finned tubes have been widely used in petrochemical, power generation, metallurgy, refrigeration and air conditioning and other fields, and their types, manufacturing processes and application scenarios are constantly enriched and improved. For practitioners, a systematic understanding of the classification, manufacturing processes, application scenarios and performance influencing factors of tension wound finned tubes is the basis for rational selection, design and application. This paper focuses on the core technology of tension wound finned tubes, systematically sorts out the classification, manufacturing processes, application scenarios and technical development trends, and combines industry standards and practical engineering experience to provide a comprehensive technical analysis, helping practitioners avoid technical mistakes and improve the efficiency and reliability of heat exchange systems.

 

 

 

Tension wound finned tubes can be classified into different types according to base tube material, fin type, winding structure and application conditions. Each type has its own unique structural characteristics, mechanical properties and heat transfer performance, which are suitable for different industrial heat exchange scenarios. The detailed classification is as follows, providing a scientific basis for the selection of tension wound finned tubes.

 

 

The base tube material of tension wound finned tubes directly determines its high-temperature resistance, corrosion resistance and mechanical strength, and is selected according to the working temperature, pressure and corrosive environment of the heat exchange system. Common base tube materials include carbon steel, alloy steel, stainless steel, copper and copper alloy, aluminum and aluminum alloy.

 

- Carbon Steel Base Tension Wound Finned Tubes: The base tube is made of carbon steel (such as 20# steel, 10# steel), which has the advantages of low cost, good mechanical strength and easy processing. It is suitable for low and medium-temperature (below 450℃), low and medium-pressure and non-corrosive or slightly corrosive working environments, such as ordinary industrial boilers, waste heat recovery systems and low-temperature heat exchangers. The disadvantage is poor high-temperature oxidation resistance and corrosion resistance, which needs anti-corrosion treatment when used in corrosive environments.

 

- Alloy Steel Base Tension Wound Finned Tubes: The base tube is made of alloy steel (such as 15CrMo, 12Cr1MoV), which is added with alloying elements such as chromium, molybdenum and vanadium to improve its high-temperature resistance, corrosion resistance and creep resistance. It is suitable for medium and high-temperature (450-650℃), medium and high-pressure working environments, such as petrochemical reactors, thermal power plant superheaters and high-temperature waste heat recovery systems.

 

- Stainless Steel Base Tension Wound Finned Tubes: The base tube is made of stainless steel (such as 304, 316L, 321), which has excellent corrosion resistance, high-temperature oxidation resistance and mechanical properties. It is suitable for high-temperature (up to 800℃), high-pressure and strong corrosive working environments, such as nuclear power plant heat exchangers, chemical industry corrosion-resistant heat exchangers and marine heat exchange systems. The disadvantage is high cost, which limits its application in ordinary industrial scenarios.

 

- Non-ferrous Metal Base Tension Wound Finned Tubes: Including copper and copper alloy base, aluminum and aluminum alloy base finned tubes. Copper base finned tubes have excellent thermal conductivity, suitable for low-temperature (below 200℃) heat exchange scenarios such as refrigeration and air conditioning; aluminum base finned tubes have the advantages of light weight, low cost and good corrosion resistance, suitable for air-cooled heat exchangers and low-temperature waste heat recovery systems.

 

 

The fin type of tension wound finned tubes directly affects the heat transfer area, fluid resistance and heat transfer efficiency. According to the cross-sectional shape and structure of the fin, it can be divided into rectangular fin, spiral fin, serrated fin, corrugated fin and variable-pitch fin.

 

- Rectangular Tension Wound Finned Tubes: The fin cross-section is rectangular, with simple structure, easy processing and large heat transfer area. It is suitable for low-velocity fluid heat exchange scenarios, such as low-velocity air-cooled heat exchangers and low-temperature liquid heat exchangers. The disadvantage is that the fluid resistance is relatively large, and the heat transfer efficiency is not as high as that of spiral or serrated fins.

 

- Spiral Tension Wound Finned Tubes: The fin is wound around the base tube in a spiral shape, which can enhance the turbulence of the fluid, reduce the boundary layer thickness and improve the heat transfer efficiency. At the same time, the spiral structure can reduce the fluid resistance, making it suitable for high-velocity fluid heat exchange scenarios, such as high-temperature flue gas heat exchangers and gas-liquid heat exchangers. It is the most widely used fin type in tension wound finned tubes.

 

- Serrated Tension Wound Finned Tubes: The fin edge is serrated, which can break the fluid boundary layer, enhance the heat transfer effect and reduce the fluid resistance. Compared with rectangular and spiral fins, it has higher heat transfer efficiency, suitable for high-heat-flux and high-velocity fluid heat exchange scenarios, such as high-temperature waste heat recovery boilers and gas turbines.

 

- Corrugated Tension Wound Finned Tubes: The fin surface is corrugated, which can increase the heat transfer area and enhance the fluid turbulence, further improving the heat transfer efficiency. It is suitable for scenarios where the heat transfer requirement is high and the fluid resistance is allowed, such as petrochemical heat exchangers and refrigeration condensers.

 

- Variable-Pitch Tension Wound Finned Tubes: The fin pitch is not uniform, and the pitch is adjusted according to the fluid flow and heat transfer requirements. It can balance the heat transfer efficiency and fluid resistance, and is suitable for complex heat exchange scenarios where the fluid parameters change greatly, such as multi-stage heat exchangers and waste heat recovery systems with variable flue gas temperature.

 

 

According to the winding structure and number of fins, tension wound finned tubes can be divided into single-layer tension wound finned tubes, double-layer tension wound finned tubes and multi-layer tension wound finned tubes.

 

- Single-Layer Tension Wound Finned Tubes: A single layer of fin strip is wound around the base tube with tension, which is the most common structure. It has the advantages of simple manufacturing process, low cost and good heat transfer performance, suitable for most industrial heat exchange scenarios, such as ordinary heat exchangers, waste heat recovery pipelines and air-cooled equipment.

 

- Double-Layer Tension Wound Finned Tubes: Two layers of fin strips are wound around the base tube in sequence, with the upper and lower layers of fins arranged in a staggered or parallel manner. This structure can further increase the heat transfer area, improve the heat transfer efficiency, and is suitable for high-heat-flux heat exchange scenarios, such as high-temperature flue gas waste heat recovery and large-scale petrochemical heat exchangers.

 

- Multi-Layer Tension Wound Finned Tubes: Three or more layers of fin strips are wound around the base tube, which has the largest heat transfer area and the highest heat transfer efficiency. It is suitable for extreme high-heat-flux and compact heat exchange scenarios, such as aerospace heat exchangers, nuclear power plant heat exchangers and high-efficiency refrigeration equipment. The disadvantage is complex manufacturing process, high cost and high requirements for tension control.

 

 

According to the working temperature, pressure and fluid medium of the application scenario, tension wound finned tubes can be divided into low-temperature type, medium-temperature type and high-temperature type.

 

- Low-Temperature Tension Wound Finned Tubes: Suitable for working temperature below 200℃, mainly used in refrigeration and air conditioning, low-temperature waste heat recovery, food processing and other fields. The base tube is usually made of copper, aluminum or carbon steel, and the fin is made of aluminum or copper.

 

- Medium-Temperature Tension Wound Finned Tubes: Suitable for working temperature between 200-450℃, mainly used in ordinary industrial boilers, petrochemical refining, metallurgical waste heat recovery and other fields. The base tube is usually made of carbon steel or ordinary alloy steel, and the fin is made of carbon steel or alloy steel.

 

- High-Temperature Tension Wound Finned Tubes: Suitable for working temperature above 450℃, mainly used in thermal power plant superheaters, petrochemical high-temperature reactors, nuclear power plant heat exchangers and other fields. The base tube is usually made of high-temperature alloy steel or stainless steel, and the fin is made of high-temperature alloy steel.

 

 

 

The manufacturing process of tension wound finned tubes is the core factor determining the bonding quality, heat transfer performance and structural stability of the product. The core process is the tension winding process, which involves pre-processing of base tube and fin, tension control, winding operation, post-processing and quality inspection. Each link has strict technical requirements, and the rational setting of process parameters directly affects the final product quality. The detailed manufacturing process is as follows:

 

 

Pre-processing is the foundation to ensure the bonding quality of tension wound finned tubes, including surface treatment of base tube, cutting and forming of fin strip, and pre-heating treatment (if necessary).

 

- Base Tube Surface Treatment: The outer surface of the base tube needs to be cleaned and derusted to remove oil, rust, oxide scale and other impurities, ensuring the surface roughness meets the requirements (usually Ra 1.6-6.3 μm). Common surface treatment methods include sandblasting, pickling, phosphating and mechanical polishing. Sandblasting is the most widely used method, which can not only remove impurities, but also increase the surface roughness of the base tube, enhance the friction between the fin and the base tube, and improve the bonding strength.

 

- Fin Strip Cutting and Forming: The fin strip is cut from the raw material (such as steel plate, aluminum plate, copper plate) according to the designed width, thickness and length. For spiral fins, serrated fins and corrugated fins, it is necessary to form the fin strip through rolling or stamping. The dimensional accuracy of the fin strip (width, thickness, pitch) must meet the design requirements, and the surface of the fin strip should be smooth, free of cracks, burrs and other defects.

 

- Pre-Heating Treatment: For high-temperature type tension wound finned tubes or fin strips with large thickness, pre-heating treatment is required for the base tube and fin strip before winding. The pre-heating temperature is usually 150-300℃, which can reduce the hardness of the material, improve the plasticity, facilitate the deformation during winding, and reduce the residual stress after winding. Pre-heating should be uniform to avoid local overheating or underheating.

 

 

The tension winding process is the key link of manufacturing tension wound finned tubes, which is to wind the processed fin strip around the outer surface of the base tube with a constant tension, forming a tight interference fit between the fin and the base tube. The process is completed by a professional tension winding machine, and the key technologies include tension control, winding speed control, pitch control and winding direction control.

 

- Tension Control: Tension control is the core of the winding process, which directly affects the bonding strength and contact tightness between the fin and the base tube. The tension should be set according to the material, thickness of the fin strip and the material of the base tube, usually ranging from 5-50 kN. Too small tension will lead to loose bonding, large contact thermal resistance and easy fin falling off; too large tension will cause deformation or damage of the fin strip and base tube, affecting the structural integrity. The modern tension winding machine adopts automatic tension control system, which can realize real-time adjustment of tension, ensuring the stability and uniformity of tension during the winding process.

 

- Winding Speed Control: The winding speed should be matched with the tension and the material of the fin strip, usually ranging from 10-50 r/min. Too fast winding speed will lead to uneven tension distribution, poor bonding quality and uneven fin pitch; too slow winding speed will reduce production efficiency and increase production cost. The winding speed should be kept stable during the winding process, and adjusted according to the actual situation.

 

- Pitch Control: The fin pitch is determined according to the heat transfer requirements and fluid resistance requirements, usually ranging from 2-20 mm. The pitch control is realized by the synchronous operation of the winding machine and the feeding mechanism of the fin strip. The pitch should be uniform, and the deviation should not exceed ±0.1 mm, to ensure the heat transfer uniformity and structural stability of the finned tube.

 

- Winding Direction Control: The winding direction of the fin strip can be clockwise or counterclockwise, which is determined according to the installation direction of the finned tube in the heat exchanger and the fluid flow direction. For spiral finned tubes, the winding direction should be consistent with the fluid flow direction as much as possible to reduce the fluid resistance and improve the heat transfer efficiency.

 

 

After the winding process is completed, post-processing is required to eliminate residual stress, improve the bonding strength and surface quality of the finned tube, and ensure the performance of the product. Common post-processing methods include heat treatment, surface anti-corrosion treatment and trimming.

 

- Heat Treatment: Heat treatment is mainly used to eliminate the residual stress generated during the winding process, improve the bonding strength between the fin and the base tube, and enhance the mechanical properties of the finned tube. The heat treatment process includes annealing, normalizing and tempering. The temperature and time of heat treatment are determined according to the material of the base tube and fin. For example, carbon steel finned tubes are usually annealed at 600-700℃ for 2-4 hours, then cooled slowly to room temperature.

 

- Surface Anti-Corrosion Treatment: For finned tubes used in corrosive environments, surface anti-corrosion treatment is required to improve their corrosion resistance and service life. Common anti-corrosion treatment methods include galvanizing, chrome plating, spray coating (such as ceramic coating, polymer coating) and chemical conversion coating. The selection of anti-corrosion method is determined according to the corrosive medium and working environment.

 

- Trimming: After winding and heat treatment, the two ends of the finned tube may have uneven fins or burrs, which need to be trimmed to ensure the dimensional accuracy and surface quality of the finned tube. Trimming is completed by a professional trimming machine, and the trimmed finned tube should meet the design requirements of length and end flatness.

 

 

Quality inspection is an important link to ensure the product quality of tension wound finned tubes, including dimensional inspection, bonding strength inspection, surface quality inspection and non-destructive testing.

 

- Dimensional Inspection: Inspect the key dimensions of the finned tube, including base tube diameter, wall thickness, fin width, fin thickness, fin pitch and total length. The dimensional deviation should meet the relevant industry standards (such as GB/T 15386-2017, ASTM A179/A179M). Common inspection tools include calipers, micrometers, tape measures and pitch gauges.

 

- Bonding Strength Inspection: The bonding strength between the fin and the base tube is inspected by pull-off test or shear test. The pull-off force or shear force should meet the design requirements, and there should be no fin falling off or obvious deformation during the test. For high-temperature and high-pressure finned tubes, the bonding strength should be inspected randomly, and the unqualified products should be reworked or scrapped.

 

- Surface Quality Inspection: Inspect the surface of the finned tube for cracks, burrs, rust, oil stains and other defects. The fin surface should be smooth, the winding should be tight and uniform, and there should be no loose or warped fins.

 

- Non-Destructive Testing: For high-end and high-demand finned tubes (such as nuclear power plant finned tubes, aerospace finned tubes), non-destructive testing is required, including ultrasonic testing, radiographic testing and magnetic particle testing. Ultrasonic testing is used to detect internal defects (such as gaps between fin and base tube), radiographic testing is used to detect internal cracks and pores, and magnetic particle testing is used to detect surface and near-surface cracks.

 

 

 

Tension wound finned tubes, with their superior bonding strength, high heat transfer efficiency, compact structure and long service life, are widely used in various industrial fields that require efficient heat exchange. Their application fields cover petrochemical, power generation, metallurgy, refrigeration and air conditioning, waste heat recovery and other industries. The specific application scenarios are as follows, combined with practical engineering cases to illustrate their application advantages and key technical requirements.

 

 

The petrochemical industry involves a large number of heat exchange processes, with harsh working conditions (high temperature, high pressure, corrosive media) and high requirements for heat transfer efficiency and reliability. Tension wound finned tubes are widely used in reactors, heat exchangers, condensers, evaporators and waste heat recovery systems of petrochemical plants.

 

- Petrochemical Heat Exchangers: In the refining, cracking and hydrogenation processes of petrochemical plants, tension wound finned tubes are used as the core heat transfer components of heat exchangers to transfer heat between process fluids. For example, in a catalytic cracking unit, alloy steel spiral tension wound finned tubes are used in the flue gas heat exchanger, which can withstand high temperature (up to 600℃) and corrosive flue gas, the heat transfer efficiency is improved by 35-45% compared with traditional welded finned tubes, and the service life is extended by more than 2 times.

 

- Waste Heat Recovery Systems: A large amount of high-temperature flue gas (temperature 500-800℃) is generated in the petrochemical production process. Tension wound finned tubes are used in the flue gas waste heat recovery boiler to recover the waste heat, generate steam for power generation or heating, improving energy utilization efficiency and reducing environmental pollution. For example, in a large petrochemical refinery, the waste heat recovery system adopts stainless steel serrated tension wound finned tubes, the waste heat recovery efficiency reaches 75% or more, and the annual energy saving is about 10,000 tons of standard coal.

 

 

The power generation industry (thermal power, nuclear power, biomass power) has high requirements for heat exchange efficiency and reliability of heat transfer components, and the working environment is usually high temperature and high pressure. Tension wound finned tubes are widely used in boilers, superheaters, economizers, air preheaters and waste heat recovery systems of power plants.

 

- Thermal Power Plant Boilers: In thermal power plants, tension wound finned tubes are used in the economizer, air preheater and superheater of boilers. The economizer uses carbon steel or alloy steel tension wound finned tubes to recover the waste heat of flue gas, heat the feed water, improve the boiler efficiency; the air preheater uses spiral tension wound finned tubes to heat the combustion air with flue gas waste heat, enhance the combustion efficiency; the superheater uses high-temperature alloy steel tension wound finned tubes to heat the saturated steam into superheated steam, improving the power generation efficiency. For example, in a 600MW thermal power plant, the economizer adopts alloy steel spiral tension wound finned tubes, which increases the heat transfer area by 4-6 times compared with smooth tubes, and the boiler efficiency is improved by 2.5-3.5%.

 

- Nuclear Power Plant Heat Exchangers: Nuclear power plants require heat transfer components to have excellent corrosion resistance, radiation resistance and structural stability. Stainless steel tension wound finned tubes are used in the primary circuit heat exchanger and secondary circuit heat exchanger of nuclear power plants, to transfer the heat generated by nuclear fission to the working fluid, ensuring the safe and stable operation of the nuclear power plant. The bonding strength of the finned tubes is required to be high, and no fin falling off is allowed during long-term operation.

 

 

The metallurgical industry (steel, non-ferrous metals) generates a lot of high-temperature waste heat during the smelting process, and the working environment is harsh (high temperature, high dust, corrosive flue gas). Tension wound finned tubes are widely used in the waste heat recovery and cooling systems of metallurgical furnaces.

 

- Metallurgical Furnace Waste Heat Recovery: In steel plants, blast furnaces, converter furnaces and electric furnaces generate a large amount of high-temperature flue gas (temperature 600-1000℃). Tension wound finned tubes are used in the flue gas waste heat recovery boiler to recover the waste heat, generate steam for power generation or heating, reducing energy consumption. For example, in a blast furnace flue gas waste heat recovery system, high-temperature alloy steel annular tension wound finned tubes are used, which have good high-temperature oxidation resistance and dust wear resistance, and the waste heat recovery efficiency reaches 70% or more.

 

- Metallurgical Equipment Cooling: Tension wound finned tubes are used in the cooling systems of metallurgical equipment (such as blast furnace cooling walls, converter cooling water pipes) to transfer the heat of the equipment to the cooling water, ensuring the safe operation of the equipment. The finned tubes used in this scenario require strong resistance to vibration and thermal shock, and the bonding strength between the fin and the base tube is high.

 

 

The refrigeration and air conditioning industry requires heat transfer components to have high heat transfer efficiency, compact structure and light weight. Tension wound finned tubes (mainly copper base and aluminum base) are widely used in air conditioners, refrigerators, cold storage and other equipment.

 

- Air Conditioners: In central air conditioners and household air conditioners, aluminum or copper tension wound finned tubes are used in evaporators and condensers. The spiral tension wound finned tubes have high heat transfer efficiency and compact structure, which can reduce the volume and weight of the air conditioner, improve the energy efficiency ratio. For example, in a central air conditioning system, aluminum spiral tension wound finned tubes are used in the condenser, the heat transfer efficiency is improved by 20-30% compared with traditional inserted finned tubes, and the energy efficiency ratio is increased by 10-15%.

 

- Cold Storage and Refrigeration Equipment: In cold storage and refrigeration equipment, copper base tension wound finned tubes are used in the evaporator to transfer the cold energy, ensuring the refrigeration effect. The copper finned tubes have excellent thermal conductivity and corrosion resistance, suitable for low-temperature and humid environments.

 

 

In addition to the above fields, tension wound finned tubes are also widely used in marine engineering, aerospace, food processing and other fields:

 

- Marine Engineering: Marine environments are highly corrosive (saltwater corrosion). Stainless steel or copper alloy tension wound finned tubes are used in marine heat exchangers (such as seawater cooling heat exchangers, marine boiler heat exchangers) to transfer heat, ensuring the normal operation of marine equipment and resisting seawater corrosion.

 

- Aerospace: In aerospace equipment (such as aircraft engines, spacecraft heat exchangers), high-precision, high-temperature resistant tension wound finned tubes are used, which have compact structure, high heat transfer efficiency and strong resistance to extreme environments. The finned tubes are usually made of high-temperature alloy steel or titanium alloy, and the manufacturing process requires high precision.

 

- Food Processing: In food processing industry (such as beverage sterilization, food drying), low-temperature tension wound finned tubes are used in heat exchangers to transfer heat, ensuring the food quality and safety. The finned tubes are usually made of stainless steel, which is non-toxic, corrosion-resistant and easy to clean.

 

 

 

The performance of tension wound finned tubes (heat transfer efficiency, service life, structural stability) is affected by many factors, including material selection, structural design, manufacturing process and service environment. Understanding these factors is crucial for optimizing the design and application of tension wound finned tubes. At the same time, with the continuous development of industrial technology, tension wound finned tube technology is showing new development trends.

 

 

- Material Selection: The material of the base tube and fin directly affects the high-temperature resistance, corrosion resistance, thermal conductivity and mechanical strength of the finned tube. Selecting the appropriate material according to the working temperature, pressure and corrosive environment is the basis for ensuring the performance of the finned tube. For example, in high-temperature and corrosive scenarios, stainless steel or high-temperature alloy steel should be selected; in low-temperature scenarios, copper or aluminum can be selected to reduce cost and weight.

 

- Structural Design: The fin type, fin pitch, fin thickness, fin width and winding structure directly affect the heat transfer area, fluid resistance and heat transfer efficiency of the finned tube. A reasonable structural design can balance the heat transfer efficiency and fluid resistance. For example, spiral fins have higher heat transfer efficiency than rectangular fins, but the manufacturing cost is higher; variable-pitch fins are more suitable for complex heat exchange scenarios where the fluid parameters change greatly.

 

- Manufacturing Process: The tension control, winding speed, pitch control and post-processing in the manufacturing process directly affect the bonding strength and contact tightness between the fin and the base tube. Unreasonable process parameters will lead to loose bonding, large contact thermal resistance, fin falling off and other defects, affecting the heat transfer performance and service life. For example, too small tension will lead to loose bonding, and too large tension will cause material damage.

 

- Service Environment: Factors such as working temperature, pressure, corrosive media, dust and vibration in the service environment affect the service life of the finned tube. High temperature will accelerate the oxidation and aging of the material; corrosive media will cause corrosion of the base tube and fin; dust will block the fins, reducing heat transfer efficiency; vibration will cause fatigue damage to the fin and base tube, leading to fin falling off.

 

 

With the continuous demand for energy conservation and emission reduction and the development of industrial technology, tension wound finned tube technology is developing towards high efficiency, high temperature resistance, corrosion resistance, intelligence and lightweight. The main development trends are as follows:

 

- High-Efficiency Heat Transfer Technology: By optimizing the fin structure (such as variable-pitch serrated fins, corrugated fins), improving the surface treatment technology (such as surface coating, micro-structural modification) and optimizing the winding parameters, the heat transfer efficiency of tension wound finned tubes is further improved. For example, the micro-structural modification of the fin surface can enhance the fluid turbulence and reduce the boundary layer thickness, and the heat transfer efficiency can be improved by 15-25%.

 

- High-Temperature and Corrosion-Resistant Material Development: The development of new high-temperature alloy materials (such as nickel-based alloy, titanium alloy) and corrosion-resistant materials (such as duplex stainless steel, ceramic composite materials) improves the high-temperature resistance and corrosion resistance of tension wound finned tubes, making them suitable for more harsh working environments (such as temperature above 1000℃, strong corrosive media).

 

- Intelligent Manufacturing: Combining intelligent manufacturing technologies (such as 3D printing, robot winding, automatic tension control system) with digital management, the manufacturing accuracy and production efficiency of tension wound finned tubes are improved. The intelligent winding machine can realize real-time monitoring and adjustment of process parameters, reduce manual operation, and ensure the consistency of product quality. Digital management can realize the whole process tracking of product design, production and inspection.