Elliptical Fin Tube|Elliptical Tube With Rectangular Fins| Hot dipped galvanized oval fin tubes

What is elliptical fin tube or oval fin tube?

Elliptical fin tube also called oval fin tube. Elliptical finned tubes have two parts, one is elliptical tubes and rectangle fins. The elliptical tube can be seamless steel tube or welded oval steel tube. The fins are carbon steel and in rectangular shape. Furthermore the rectangular fin can be with interrupting holes or without interrupting holes.

Elliptical Finned Tube design utilizes an elliptical shaped tube with an efficient air foil shape to minimize airside flow resistance, While these rectangular fins can improved heat transfer performance characteristics compared to round tube types.

How about the elliptical fin tube surface treatment?

The corrosion resistance of these fins will be very high after being hot dip galvanized. These fin tubes are very compact compared to other types of fin tubes and their heat transfer efficiency is significant. So its also called Hot dipped galvanized elliptical/oval fin tubes.

How to manufacture the elliptical fin tube?

1. Produce seamless or welded oval steel tube;

2. Punched the rectangular fins through mold on steel coils;

3. Automatically fill the fins into elliptical tubes;

4. Hot dip galvanized the finned tubes. The finned tube dipped in melted zinc tanks. The gap between the fin and the core tube is filled completely by zinc.

The typical elliptical fin tube size:

Base Tube O.D (mm)	Base Tube Thickness (mm)	Fin Height (mm)	Fin Thickness (mm)	Fin Pitch (mm)
36 x 14	1.5-3.0	55 x 26	0.25	2.31,2.54,2.82,3.18
Base Tube Material		Fin Material		Tube Length (Mtr)
Carbon Steel ,Alloy Steel ,Stainless Steel		Carbon Steel ,Alloy Steel ,Stainless Steel		≤ 12 Mtrs

Whats the elliptical fin tube advantage?

1. Compared with round finned tube, elliptical finned tube is easier to achieve compact layout, which reduces the overall volume of the whole heat exchanger, thus reducing the floor area.

2. Due to the shape characteristics of elliptical finned tubes, the air side resistance is small, and the heat transfer coefficient between fluids increases; The thermal resistance in the tube is relatively small, which increases the heat transfer of the fluid in the tube.

3. The heat transfer area of elliptical finned tubes is larger than that of circular tubes with the same cross-sectional area, because the heat transfer perimeter of elliptical tubes is longer under the same cross-sectional area.

4. Rectangular steel fins are the most commonly used elliptical finned tubes with high strength. The base tube should not be frozen in winter and has a long service life.

5. Since elliptical finned tubes can be arranged more compactly, the front row tubes have a greater impact on the rear row tubes. The external flow resistance of the tubes can be reduced by increasing the fin spacing of the rear row tubes, but the number of tube rows should not be too large.

6. Elliptical Finned Tubes maximum working temperature reach 400°C.

In order to forward you a promt offer we would be pleased to receive you detailed enquiry including:

• Base tube material 

• Base tube size (OD x WT x Length)

• Fin material

• Fin type

• Fin diameter or height

• Fin thickness

• Fins per inch, meter or fin pitch

• Lenght of plain, unfinned ends

• Finned Tube Quantity

(Additional fabrication, such as bend or weld the tubes into tubeplate or assembly) 

Elliptical Fin Tube|Elliptical Tube With Rectangular Fins| Hot dipped galvanized oval fin tubes