DELLOK Extruded Air Preheater Finned Tube

DELLOK Extruded Air Preheater Finned Tube

About us

^{DELLOK (YONGHUI RADIATING PIPE MANUFACTURING CO.,LTD.) was established in 2002, which is located in Jiangsu, China. After many years of development, the company now has 66 million yuan in fixed assets, more than 200 employees, and 33 technical staffs. We have 4 aluminum processing production lines, with the annual processing capacity of more than 20,000 tons; And we have 5 tube-drawing production lines; 47 fintube production lines, 1 imported production line from American with the brand of McElroy , with the annual production capacity of 12 million meters the above. Quality is the theme of eternal pursuit of winner -Production workshop- Meticulous works, standardized management system and systematic quality assurance are Dellok(YONGHUI)'s best commitment to quality. In Dellok(YONGHUI), the quality control is not only the detection of the final process, but throughout the entire production process. We implement a set of quality control and assurance systems. Each batch of pipes is sampled and tested, and records are kept as a quality guarantee for the final product.}

^Properties:

^{Manufacturing Process:- Cold Extrusion}

^{Fin To Tube Bond:- Excellent}

^{Heat Transfer Efficiency:- Excellent}

^{Mechanical Resistance:- Excellent (Hence can be frequently cleaned with high pressure jets unlike other fin tubes. Thereby reducing down time and increasing overall life)}

^{Corrosion Protection:- Gives excellent corrosion protection to the base tube since it entirely covers the base tube (except bare ends).}

^{Temperature Range:- Upto Maximum 300 Deg C}

^{Manufacturing Process:}

^{The fins are rotary cold rolled from a smooth thick walled hollow blank tube slid over the core tube. Three multi spindle disc packs extrude the hollow blank tube into helical high fins.}

^{During this process the inner diameter of the hollow blank tube is reduced and at the same time pressed on the core tube. This results in a mechanically solid joint.}

^{Fin Material: Aluminium/Copper.}

^{Core Tube Material: Carbon Steel/ Carbon}

^{Alloy Steel/Stainless Steel/ Nickel Alloys/Copper/Copper Alloys/Titanium.}

^Advantages:

^{100% fin-to-tube bond providing exceptional efficiency and longevity.}

^{Excellent corrosion protection on the base tube.}

^{Easy to clean with a high-pressure water jet without deforming the fins.}

^{As the outer sleeve is continuous No galvanic corrosion between the tube and fins.}

^{The bonding of the outer and inner tubes removes the risk of loss of contact with the aluminium due to thermal stress and fins are vibration resistant.}

^{Higher heat transfer performance for the life of the unit.}

^{Extruded Finned tubes are commonly used in applications with temperature up to 325 °c.}

^{Product Description:}

^{Extruded Finned Tubes provide the greatest resistance to atmospheric corrosion. The aluminum fin material completely encloses the tube, except at the ends where a tube coating can be applied. Where atmospheric corrosion is present and when operated within design temperature limits, 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.}

^{Extruded Finned Tubes are commonly used in applications with temperatures up to 550 degrees Fahrenheit.}

^{Applications:}

^{Primary 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 exhaust 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.}