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Extruded finned tube with or without liner tubes are available. The extruded finned tube is formed by a rolling process that raises fins in a continuous spiral on a straight length of tubing. This means that the extruded fin tubing is made from one piece of extruded copper tube. The heat exchanger should be a bare, welded or extruded finned tube coil assembly installed either inside or parallel to the boiler exhaust stack or duct. Our air coolers are made with extruded finned tubes. The fins are made by inserting a liner tube of any material into and aluminum tube. As the two tubes are passed in our machine the fins are formed by a rotary extrusion and the aluminum tube is compassed on the liner tube. By this process these are no galvanic corrosion and the fins are very easy to clean as they are hardened during the process of extruded finning tube. The extruded fin tubing is made from one piece of extruded copper tube, not from separate fins attached to the copper tubes. Manufactured of extruded finned tubes wound spirally with aluminum metal-strip or cold rolled extruded fins tubes. Tapered fin design provides maximum fin-to-tube contact for optimum heat transfer. Individually extruded finned tubes allow unrestricted movement of the tubes, eliminating stress on the tube and fin to tube bond caused by thermal cycling. In the tube division cold extruded finned tubes are fabricated for various industries. Integrally extruded finned tubes are those in which helical fins are extruded from the tube by a rolling process. Extruded Fin and tube type heat exchangers are those in which a copper tube is mechanically expanded into a stack of regularly spaced copper or extruded aluminium fins pierced with a pattern of holes sized to receive the tube. The Heat Exchanger is constructed from extruded finned copper tube, where the fins are extruded and give heat transfer a nice ratio over plain tube. This feature allows free expansion and contraction of the extruded finned tubes within the casing and eliminates the associated tube joint failure often seen with a top supply and bottom return connection design. In addition, the fins are extruded so they are essential in a straight line and parallel to flow. Extruded fin tube with low fins and interior rifling is specified for. Tubes with finned inserts and integrally extruded finned tubes are most widely used due to the relative. simplicity of fabrication technology. All Enerfin gas heaters come standard with integral copper extruded finned tube. This means that the fin tubing is made from one piece of extruded copper tube. Since the fins are integral to the tube, maximum heat transfer is attained. The extruded finned tube heat exchanger responds immediately on demand to provide based on a temperature rise of 44°C. Tube is seamless in construction. Tubing is typically extruded.
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