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China, Chinese Stainless Steel / Copper Finned Tube for Air Heater, Chiller, Heat Exchanger – L G Type Embedded Fin Tube1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Industrial Pipeline PipesHigh Pressure Seamless Steel PipeChillerHeat Exchanger – L G Type Embedded Fin TubeCarbon Steel Fin TubeStainless Steel Boiler Tube
EZ Steel Industrial Co., Ltd.
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Product Description Product DescriptionSA179 Carbon Steel Extruded Finned Tube For Heat ExchangerTechnical Specifications: Base Tube Materialstainless steel, carbon steel, copper alloy,alloy steel (No theoretical limit)Fin MaterialAluminium,Copper Alloy,Stainless Steel,Carbon SteelFin tube Max design temperature<450°CBase pipe O.D25-165mmFins per inch20 Nos(as customer's request)Fin depth0.5-3mmProduct processing Extruded,Embedded,High Frequency Welding etc.Fin Tube TypeExtruded fins tubeSerrated fin tubesL Type fins tubeG Type fins tubeL L Type fins tubeH Type fins tubeKL Type fins tubeSteel Aluminum Composite Finned TubeThe processing technology of cold-rolled aluminum steel finned tube is that aluminum tube and steel pipe are first processed into bimetal composite pipe, and then the fin is formed after mechanical cold rolling. Based on the physical characteristics of aluminum tube,the finned tube with steel tube as the core and aluminum fin formed by cold rolling are made into one.It is widely used in steel,petroleum,chemical industry. Machinery, shipbuilding, power station,hospital and food industry.1.High heat transfer performance and low contact thermal resistance;2.The contact area between the fin and the tube is large,and the joint is tight and reliable;3.Good corrosion resistance and stable long-term service performance;4.The fin has good rigidity and easy to deform.Copper Aluminum Composite Finned TubeCopper aluminum composite finned tube is made of copper and aluminum composite tube after being compounded and then rolled. It has the characteristics of close combination, small thermal resistance, good heat transfer performance, high strength, small flow loss, strong corrosion resistance, low deformation and long working life under long-term cold and thermal conditions. The integral rolling fin is smooth without burr, wrinkle and easy to clean. When wet cooling is carried out in heating and air conditioning engineering, condensation water on the surface of fin is easy to be removed, and it is not easy to form dust and scale in coax heating and other heat exchange occasions.Pure Aluminum Composite Finned TubeSingle metal composite finned tube is rolled by aluminum tube as a whole. Pure aluminum rolling finned tube has no contact thermal resistance, high strength, heat resistance and mechanical vibration, good thermal expansion performance and considerable expansion heat exchange surface.Pure Copper Composite Finned TubeCopper finned tube is a kind of heat exchange element. In order to improve the heat exchange efficiency, fins are usually added on the surface of the heat exchange tube to increase the external surface area (or internal surface area) of the heat exchange tube, so as to achieve the purpose of improving the heat exchange efficiency. The integral rolling finned tube has no contact thermal resistance, good heat transfer performance, high strength, heat resistance and mechanical vibration, and good thermal expansion performance.LL-type Spiral Wound Finned TubeLL type spiral wound finned tube: on the basis of L-type, the root of the fin is completely covered on the outer surface of the base tube, which can strengthen the contact surface and increase the heat transfer effect. Maximum working temperature: 170 oC.KL type finned tubeKL type finned tube, also known as knurled fin tube, is to roll the pattern on the base tube before winding the fin, or install a blade on the winding machine to knuckle on the base tube, and the back blade is used for winding, knurling and winding at the same time.The maximum service temperature is <250C, and the maximum service pressure is <3.2Mpa.Performance features:1. High heat transfer performance and low contact thermal resistance;2. The contact area between the fin and the tube is large, and the joint is tight and reliable;3.It has good atmospheric corrosion resistance and stable long-term service performance.Embedded Finned Tube:Processing technology: the fins are tightly embedded in the outer surface of the base tube with mechanical grooves:Base pipe material: carbon steel, alloy steel, stainless steel, dual phase steel, copper pipe;Fins:Aluminum 1060,aluminum 1100,T2 copper;Application: air cooler,heat exchanger,heater, economizer.Application Area:Petroleum, chemical and petrochemical industries;Natural gas treatment;Steel industry: blast furnace and converter system;Power generation: condensation of exhaust gas from steam turbine, condensation watercontact cycle cooling condensation, fossil and nuclear power plants;Air conditioning (freon, ammonia, propane);Waste incineration equipment;Compressor cooler,etc.T-type finned tube: T-type finned tube is suitable for the shell side medium is relatively clean, no solid particles, no gum. T-type finned tube can be used as heat exchange element to form T-type finned tube high-efficiency heat exchanger, so as to improve the effect of shell side boiling heat transfer.1, The heat transfer effect is good, In R113, the boiling heat transfercoefficient of T tube is 1.6-3.3 times higher than that of smooth tube:2,In conventional smooth tube heat exchanger, only when the temperatureof hot medium is higher than boiling point or bubble point of cold medium by12oC-15 C.the cold medium will bubble and boil.However.the T-type finnedtube heat exchanger only needs the temperature difference of 2C- 4C, and the cold medium can boil, and the bubbling is fine, continuous and fast, which forms a unique advantage compared with smooth tube;3.The experimental results show that the boiling heat transfer coefficientof T-tube is 10 times of that of smooth tube: the total heat transfer coefficient of small tube bundle with liquid ammonia is 2.2 times of that of smooth tube;the industrial calibration of reboiler of C3 and C4 hydrocarbon separationtower shows that the total heat transfer coefficient of T-tube is 5o% higherthan that of smooth tube at low load and 99% higher at high load:4.It is cheaper than the aluminum porous surface heat transfer tube:5. As the gas-liquid disturbance inside the tunnel is very intense and thegas is ejected along the T-slot at high speed, it is not easy to scale inside the T-groove or on the outer surface of the pipe, which ensures that theequipment can be used for a long time without the effect of scaling on the heat transfer effect.The corrugated tube:The corrugated tube is a new type of high efficiency heat exchange tube instead of the row tube.It has the advantages of strong corrosion resistance, longer service life, no pitting corrosion and Iow price. The stainless steel corrugated tube of corrugated tube heat exchanger is made of high-quality stainless steel material. which is corrosion-resistant. What's more, the special internal and external waveforms of the corrugated tube are more and more important. The turbulent medium constantly washes the inner and outer surface of the heat exchange tube, and the dirt is difficult to accumulate on the surface, Even if the scale is formed, because the corrugated tube is a flexible element, after the effect of temperature difference in the working process, all parts of the corrugated tube will be affected The curvature of the corrugated tube is constantly changing. Although the deformation caused by this curvature change is not very large, the linear expansion coefficient of the dirt and the metal corrugated tube is quite different. Therefore, a large pull-out force will be generated between the dirt and the corrugated tube surface, which is enough to make the scale fall off and realize automatic cleaning and automatic descaling. Especially, this point is incomparable to the row of tubes and other heat exchangers, and the stress distribution is uniform Good corrosion resistance.As the corrugated tube adopts ultra-thin wall stainless steel material, on the one hand, it improves the service life of the product, at the same time, it also greatly reduces the weight of the product and saves the material.Moreover, due to the reduction of the operation and maintenance cost and the reduction of the floor area, theperformance price ratio of the product is greatly improved, and the economic benefit is obvious.Expansion Wave Tube:1.High heat transfer efficiencyThe special wave crest and trough design of the expansion wave tube makes the fluid flow form strong turbulence due to the continuous mutation of the cross-section inside and outside the tube. Even under the condition of very small flow rate, the fluid can form strong disturbance inside and outside the tube, which greatly improves theheat transfer coefficient of the heat exchange tube, which is 2 3 times higher than that of the traditional tube heat exchanger.2.No pollution, no blockage, no scaling, stable operationIn the working process of the expansion wave tube, on the one hand, the medium inside and outside the tube is always in a highly turbulent state, which makes it difficult for the solid particles in the medium to deposit and scale; on the other hand, affected by the medium temperature difference,the expansion wave tube will produce a small amount of axial expansion deformation, and the curvature inside and outside the tube will change frequently. Because of the large difference betweenthe linear expansion coefficient of the scale layer and the expansion wave tube, the fouling and heat exchange tube are different Even if there is scale deposition, it will break and fall off automatically. so that the heat exchanger can always maintain long-term and efficient heat transfer performance. At the same time, the pipeline channel is large, the pressure drop is small, the energy saving effect is obvious, and there is no blockage problem.3.It has automatic compensation functionThe special structure shape of the expansion wave tube can effectively reduce the thermal stress under the condition of heating without adding expansion joint, thus simplifying the product structure and improving the reliability of the product.4.Reliable, safe and firmThe sealing perimeter of the product is short, and the existence of wave crest and trough enhances its axial expansion and contraction ability, effectively reduces the temperature difference stress, and can adapt to the change of large temperature difference and pressure, so as to avoid leakage caused by pipe orifice rupture. The unique connection technology of baffle plate and corrugated tube extends the service life of heat exchanger. The heat transfer efficiency of the external expansion corrugated tube is better than that of the conventional internal pressure corrugated tube.Welded Finned Tube1. Because of the high welding speed and strong self cooling effect, the heat affected zone is small and oxidation is not easy to occur. Therefore, the microstructure and properties of the weld are very good;2. Corrosion resistance, wear resistance,low contact thermal resistance,high stability.anti ash ability:3, The heat exchange area is large;4.Reduce the installation space of the required heat transfer surface;5,At the same time, it has high reliability:6.The pressure drop on the tube side is reduced and the operation costis reduced;7.The stiffness and seismic performance of steel pipe are improved;8,Reduce heat transfer and metal flow.Studded tubeThe nail head tube is also called nail like ribbed tube, In petrochemical industry, nail head pipe is widely used. Especially in the convection chamber of the tubular furnace, in order to enhance the heat transfer effect outside the tube, the heat transfer element often adopts the nail head tube.Serrated Spiral High Frequency Welding Finned TubePerformance features:1. The installation is simple and economical. The maximum length of high frequency welding spiral fin tube can reach 6 meters, which reduces the connection points, makes the installation more economical and fast, and reduces the probability of water leakage at the joint.2. It is easy to maintain. After the installation of high frequency welding spiral fin tube, it is no longer necessary to maintain.3. High efficiency, high frequency welding spiral finned tube for fin and steel tube winding full contact welding, heat dissipation area is more than 8 times of smooth tube, internal more smooth, internal flow resistance is small.4. Long service life, high mechanical strength of fin and tube combination, tensile strength of more than 2ooMPa, both inside and outside of the tube are hot-dip galvanized.H-type And Double H-type Finned Tube1. The fin is divided into two symmetrical half pieces. The tube wall is pressed down from both sides, and resistance welding is used to weld on the pipe wall with a certain gap left in the middle;2. Two circular tubes can share a group of fins, called double tube H-shaped fins, or a single tube H-shaped fin can be placed in the middle;3. The heat exchanger composed of H-type finned tubes is closely arranged and the tube bundles are arranged in order;4.The fins are parallel and independent of each other, and there is no influence of helix angle, so it is easy to remove ash.Cold Wound Steel Finned TubeAccording to the material, there are carbon steel (or stainless steel) winding aluminum sheet, carbon steel winding carbon steel sheet, stainless steel winding stainless steel sheet, the winding segment spacing is about 4mm, and the common sizes of strip steel (aluminum sheet, carbon steel sheet, stainless steel sheet) are sheet height of 10 mm, 12 mm, 15 mm, etc., sheet thickness of 0.35 mm,etc., and sheet spacing of 4 mm, 5 mm, 6 mm, etc.can also be customized according to customer requirements. Elliptical Finned TubeThe finned tube is connected to the tube piece by piece. Because the pipe is often not round (especially welded steel pipe), there is inevitably a gap between the fin and the tube wall. If there is a gap, there is a gap thermal resistance.For this reason, the following measures are often adopted: resistance welding method, dip coating method, contact welding method and tube expansion method.The utility model provides a technology for making the tube and the fin close together and improving the heat dissipation. It prefabricates the inclined edge hole on the string piece to reserve the interference material, and then retracts it to make the pipe and sheet form the extrusion of contour peak and contour valley. It can realize the seamless combination under the normal temperature condition without welding, sticking and filling other materials, so as to make it become a high-efficiency heat sink.In radiator, heat exchanger, shower water heater and so on, this technology can save tin and chemical adhesive.Longitudinal Finned TubeLongitudinal finned tubes are produced by resistance welded fins along the length of the tube. The fins first form a U-shaped channel, so that each U-shaped leg forms a fin. The channelis cut to the appropriate length, then oriented and resistance welded in place along the length of the tube. The channel is a pair of welded, opposite, so the number of fins specified must be a multiple of four.
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