Dellok Stainless Steel Integral Low Fin Tube
About Us
Dellok(YONGHUI Radiating Pipe Manufacturing Co.,Ltd) was established in 2002, which is located in Nanjing, China.We joined HARBIN AIR CONDITIONING CO., LTD. in 2022 and became the most professional industry manufacturer in 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
Product Description:
Integral fin tubes were developed to increase the heat transfer performance of fluids while reducing the physical size and cost of the Heat Exchanger. In these tubes the fins are rolled out from the wall of the tubes and hence are integral with the tube. As the fins are formed from the base tube by rolling out material from its wall, the wall thickness under the finned section is reduced compared to the wall thickness at plain ends. These fin tubes can be manufactured from most tubular materials and the hardness of the material usually determines the finning code or fin profile.
Manufacturing Process:
The Tube and Fin are in same material. After rolling process, the outer surface of tube is formed with thread, which makes the finned tube have a higher heat transfer capacity.
Integral Low Finned Tube Advantages:
Low FinTube provides 3 times the external surface area of bare tube.
It is helpful for the dropping of the cold condensate at the bottom of the tube, reducing the liquid film and thermal resistance but improving the heat transfer efficiency.
Integral low fin tubing yields numerous benefits for shell and tube heat exchangers including reduced size and cost for new equipment, increased performance of existing equipment. The cost of shell and tube heat exchangers can be reduced up to 50% through the proper application of low fin tubing.
Integral Low Fin Tube Applications:
Chemical-, Petrochemical- and Petroleum Industries. Used in condensers, oil coolers, water heaters, heat exchangers, evaporators and heat-recoverers.
Integral Low Fin Tube Specifications:
| Product Specification | ||
| Tube OD | 12.7~31.75 (mm) | 1/4”~1 1/4”(NPS) |
| Tube Wall Thk | 1.65~3.0 (mm) | 0.065”~0.118” |
| Tube Length | ≤18,500 (mm) | ≤60.7 ft |
| Fin Thk | 0.3~0.5 (mm) | 0.0118"~0.0197” |
| Fin Height | 0.9~1.3 (mm) | 0.0354”~0.0512” |
| Fin Pitch | 666~1111 FPM | 16~30 FPI |
| Fin Type | Integral Low | |
| Material | ||
| Tube Material | C.S., S.S., A.S., Copper, Titanium | |
| Applied | 415°C | |
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Temperature
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FAQ
1. What is the fin efficiency?
Fin efficiency is defined as the ratio of actual heat flow of the fin to that which would be obtained with a fin of constant temperature uniformly equal to the base surface temperature, that is, one with infinite thermal conductivity.
2. What are low finned tubes?
Low Finned tube is a finned tube obtained through plastic cold deformation. The method consists in realizing, from a smooth tube, fins with a particular geometric form without removing material; this plastic deformation causes an increment of heat exchange efficiency, and allows to reduce the heat exchanger size.
3. How are low fin tubes made?
Low finned tubes involve rotational processing of the outer surface of steel tubes to create a fin shape. A steel pipe length of 25.4 mm (1 inch) per fin and 19 fins is a design often used. We can also produce units with 26 fins.
