Finned tube----extruded fin tubes
Fabrication:
The extruded fin tubes are produced by compressing an aluminum tube, or sleeve, onto the base tube. The bloom is exposed to very high pressures which essentially "grows" the fins into the final fin profiles.This process manufacture an excellent strong joint with great resistance (fin stiffness) as well as exceptional heat transfer capabilities (longevity, temperature range). The advantage of extruded fin tubes are full protection of bare tube against corrosion and fin has high mechanical strength. Extruded finned tubes provide the most stable performance over time as compared to the other fin types. The fin is rolled from an outer aluminum tube by a process using pressure to create a rolled "pressure bond" between the liner tube and fins. The aluminum fin material completely encloses the tube, except at the ends where a tube coating can be applied.
Application:
Primaily extruded finned tubes are used in high temperature conditions and corrosive atmospheric conditions, such as operating temperatures less than 300°c or off-shore applications, heat pipes air to air heat exchangers for hvac applications, air dehumidification in air treatment plants, energy recovery in air exaust system. This kind of fin design is the least economical as compared to the other fin types, main reason due to the increased amount of aluminum used around 40% also increased labors during the manufacturing. However this increased cost can be compensated if using lower grade parent tube material.
Process: the extruded fin tube is bimetallic combined with integral aluminum fins on the outside surface. The base tube is inserted inside the aluminum tube and both tubes are passed through extrusion machine. The tight mechanical bond between aluminum tube and inner base tube is accomplished during the fining work and same time makes the n steel, low-alloy steels, stainless steel , brass , copper , cooper-nickel alloys , aluminum bronze , nickel alloys , titanium etc... Fin materials: aluminum 1060f, aluminum 6063-o, aluminum1100-o, copper Tube od: 16 mm to 50.8mm. Tube wall thickness: 1mm min Tube entire length: 16, 000mm max. Other lengths are also available to accommodate customer's need. Fin thickness: 0.3mm to 0.7mm, 0.4mm at average. Fin height: 16mm max. Fin pitch (mm): 6 fpi to 12fpi. As per purchase quantities
Aluminium fins are formed from a bimetallic tube consisting of a base tube and an aluminium muff tube. The fins are formed on a cold rolling process from the wall thickness of the aluminium muff tube. Extruded fin gives very good corrosion protection to the base tube, as the base tube is not visible to the atmosphere inbetween the fins. Maximum operating temperature for extruded finned tube is 325 deg C. Fin Material - Aluminium (or) Copper Tube Material - No theoretical limit
Extruded Fin Tube Fin material: Aluminium 1060,1050, 1070, 6063,6061,3003 fin type: extruded, Fin size: OD25mm~OD85mm, fin thickness:0.25mm~1mm, fin per inch: 5~12; Fin Length: 300mm~18000mm; Base tube material: SA179, SA789 S31803, SS304,SS316L, SA334, SA249, C44300, C68700, C71500, C70600, C12200, UNS8800,UNS4400, IN825,Titalium etc. Manufacture: A core tube is fitted into an aluminium primary tube. This assembly is then fed into the triple-spindle finning machine. Three special multi-disc packs extrude the aluminium tube into helical high fins while reducing the inner diameter to give firm pressure contact with the core tube. Application: *Air water cooler unit *Product coolers - gas, chemicals, petrochemicals, oil etc. *Heat exchangers *Boiler,Dryer *Air condtioner, Air condenser
My heat transfer technology is a professional manufacturer of industrial fin tubes, widely used in dryer, air/oil-cooler, heater, heat recovery, heat exchanger etc., which is by adding the fins on the surface area or surface area of the heat exchange tube, so as to improve the thermal efficiency. Extruded fin tube Fin material: aluminium 1060, 1050, 1070, 6063, 6061, 3003 Fin type: extruded, Fin size: od25mm~od85mm, Fin thickness:0.25mm~1mm, Fin per inch: 5~12; Fin length: 300mm~18000mm; Base tube material: sa179, sa789 s31803, ss304, ss316l, sa334, sa249, c44300, c68700, c71500, c70600, c12200, uns8800, uns4400, in825, titalium etc. Manufacture: A core tube is fitted into an aluminium primary tube. This assembly is then fed into the triple-spindle finning machine. Three special multi-disc packs extrude the aluminium tube into helical high fins while reducing the inner diameter to give firm pressure contact with the core tube.
Extruded Fin Tube Fin material: Aluminium 1060,1050, 1070, 6063,6061,3003 fin type: extruded, Fin size: OD25mm~OD85mm, fin thickness:0.25mm~1mm, fin per inch: 5~12; Fin Length: 300mm~18000mm; Base tube material: SA179, SA789 S31803, SS304,SS316L, SA334, SA249, C44300, C68700, C71500, C70600, C12200, UNS8800,UNS4400, IN825,Titalium etc. Manufacture: A core tube is fitted into an aluminium primary tube. This assembly is then fed into the triple-spindle finning machine. Three special multi-disc packs extrude the aluminium tube into helical high fins while reducing the inner diameter to give firm pressure contact with the core tube. Application: *Air water cooler unit *Product coolers - gas, chemicals, petrochemicals, oil etc. *Heat exchangers *Boiler,Dryer *Air condtioner, Air condenser
Customized Bend Extruded Fin Tube,Finned Tube Heat Exchangers,Extruded Finned CS Alloy Serpentine Tube For Boiler Heat Exchanger.
The Extruded Fin Tube also known as� Bimetallic Fin Tube� is one of the most preferred finning processes for various applications. Manufacturing process: Fin is produced by the rolling method (three-roll oblique rolling). Its working principle is: The smooth tube is lined with a mandrel, the tube material is driven by the roller blade to make a spiral linear movement, and is rolled by the roller. The hole pattern composed of the groove and the core rod is gradually processed with fins on its outer surface. In order to facilitate the formation of fins, the rolling parts adopt three stages of biting, rolling, and shaping during the deformation process, so that the processed fins are complete, smooth, and regular. The finned tube produced by this method is based on the base tube and the outer fin is an organic whole, so there is no problem of contact thermal resistance loss and electrical corrosion. It has good heat transfer efficiency and strong resistance to deformation. Extruded finned tubes consist of a light pipe and fins â??attachedâ?? to it. The structural parameters are mainly the inner diameter and outer diameter of the finned tube, the wall thickness of the finned tube, the fin pitch, the fin thickness and the fin height. Material Options: We offer the widest range of material in the industry and can extend it on request in case of special requirements for heat conductivity, mechanical properties or corrosion resistance. Below are our regular materials` combination. A. Copper aluminum composite finned tube B. Steel aluminum composite finned tube C. Pure aluminum finned tube D. Pure copper finned tube Fin Height Options: A. Low finned tubes The fins of the low finned tube are extruded directly from the tube material. The fin height is only 1-2 mm. The common low fins are 1.6 mm in the shell- and-tube heat exchanger. This kind of finned tube does not need to consider the contact thermal resistance with the tube. B. Middle finned tubes The fin height of the finned tube is about 3.2 mm, which is often used in pressure vessel equipment such as shell and tube heat exchangers. C. High finned tubes The finned tubes are usually used in air heat exchangers, whose height is lower than 16mm, depending on working conditions. D. Customized specification, please reach to us for more details. Extruded Finned Tubes Characteristic: A. High heat transfer performance and low contact thermal resistance B. The contact area between fins and tubes is large, and the connection is tight and firm. C. Good corrosion resistance, stable performance for long-term use. D. Fins have good rigidity and are not easy deform. E. Light weight and Low cost. F. Low air resistance G. Easy to clean
Product Description High Frequency Welded Stainless Steel Spiral Fin Tube Extruded Wound Finned Tube Aluminum/ Copper Fins Finned Tube Aluminum Fins Heat Exchanger Tube Product Description The spiral fin tube economizer is a newly type heat transfer equipment, consisting of spiral fin tubes to overcome the serious abrasion and short service time.Which consisted of series of spiral finned tubes, the headers of inlet and outlet, bend, frame and other auxiliaries Structure arrangement: in line/staggered arrangement Finned Tube Aluminum Fins Heat Exchanger Tube Features 1. The equipment body can be designed into many modules to ensure the long term and stable running. 2. Compact structure which can enlarge the heat exchanging area in order to add the heat transfer area and less leakage. 3. Improve the heat transfer efficiency. 4. Structure arrangement: In line or staggered arrangement. Finned Tube Aluminum Fins Heat Exchanger Tube Application Aftercoolers, air coolers, air heaters, charge air chillers, condensers, convection heaters, electric heaters, evaporators, fluid coolers, gas coolers, heat pipes, hydrogen coolers, industrial tumble dryers, intercoolers, immersion heaters, oil coolers, radiators, refrigeration, solvent recovery and steam to air heat exchangers. Technical parameters PRODUCT TYPE TUBE MATERIAL FIN MATERIAL TUBE SIZE FIN SIZE Heat Exchanger Finned Tube Extruded Fin Tube All Kind of Material can be applied Aluminum A1100 15.88~50.8 7~11.5FPI Fin Height Max 16mmH L-Foot Fin Tube All Kind of Material can be applied Copper C1100, C1220 12.70~50.8 7~11.5FPI (Wrap On Type) Fin Height Max 16mmH G-Fin Tube (Embedded Type) Aluminum A1100, A1050, A1060 High Frequency Welded Finned Tube A179 Carbon Steel Tube Carbon Steel Tube 12.70~160 1.5~7FPI Stainless Steel Tube Stainless Steel Tube 0.8~3.2mm. Thickness Alloy Steel Material Alloy Steel Material Integral Copper & Copper Alloy High Finned Tube C12200, C11000, C70600 C12200, C11000, C70600 15.88~22.23 5~9FPI Max 12mm. H Oval Finned Tube Carbon Steel Tube Carbon Steel Tube All Size Available 5~15FPI Stainless Steel Tube Stainless Steel Tube Alloy Steel Material Alloy Steel Material Copper & Copper Alloy Tube Copper & Copper Alloy Tube Monometallic Fin Tube Low Fin Tube Carbon Steel, stainless steel, titanium, copper, brass, nickel alloy, etc. -- 9.52~40 12, 16, 19 28 FPI, etc. Turbo-C Tube Turbo-E Tube Corrugated Tube All Kind of Material -- 6.35~40 2~9FPI High Frequency Welded Stainless Steel Spiral Fin Tubes Carbon Steel Spiral Finned Tubes Factory Provided Description of Spiral Finned Tubes: The spiral fin steel pipes currently used are mostly wound, high frequency welded and brazed spiral fin steel pipes. High Frequency Welded Stainless Steel Spiral Fin Tubes Carbon Steel Spiral Finned Tubes Factory Provided
Product Description Extruded Round Air Heating Finned Tubes for Drying Heat Exchangers Highest quality product Wider range of products in both geometry and materials Price saving Highest Quality Product The perfect bond between fin and tube improves efficiency in heat transfer and resistance to corrosion resulting in a clean weld fin to tube joint and fully straight fins (no corrugation). Price Saving Lower energy consumption, reduced cost of consumables and increased efficiency of the process allow us to offer very competitive prices. Application Aftercoolers, air coolers, air heaters, charge air chillers, condensers, convection heaters, electric heaters, evaporators, fluid coolers, gas coolers, heat pipes, hydrogen coolers, industrial tumble dryers, intercoolers, immersion heaters, oil coolers, radiators, refrigeration, solvent recovery and steam to air heat exchangers.
