What are Steel-Aluminum Extruded Finned Tubes?

Steel-aluminum extruded finned tubes are widely used in industry as a high-efficiency heat transfer element, especially in petrochemical, refrigeration, air conditioning, and power industries.

I. Structural Characteristics of Steel-Aluminum Extruded Finned Tubes

Steel-aluminum extruded finned tubes are composed of seamless steel tubes and aluminum fins, welded together using a high-frequency welding process. Their structure has the following characteristics:

1. Seamless steel tubes serve as the base material, possessing excellent thermal conductivity and mechanical strength.

2. The aluminum fins undergo precision machining and heat treatment processes, resulting in a high heat transfer area and heat transfer coefficient.

3. Fin height is generally between 10-100mm, and fin spacing is between 2-5mm, adjustable according to different applications.

4. Fin shapes include rectangular, trapezoidal, and corrugated, selectable based on various applications.

5. Steel-aluminum extruded finned tubes generally have large diameters, typically between DN20-DN500, and can be customized to meet specific needs. II. Manufacturing Process of Steel-Aluminum Extruded Finned Tubes

II.The manufacturing process of steel-aluminum extruded finned tubes mainly includes the following steps:

1. Material Selection: Select suitable seamless steel pipes and aluminum fin materials, requiring the materials to have excellent thermal conductivity and mechanical strength, while meeting the requirements of relevant standards.

2. Aluminum Fin Manufacturing: According to different application needs, use precision machining and heat treatment processes to manufacture aluminum fins that meet the requirements.

3. Surface Treatment: Perform surface treatment on the welded steel-aluminum extruded finned tubes, including cleaning, anti-corrosion, and rust prevention, to ensure product quality and reliability.

4. Inspection: Inspect the produced steel-aluminum extruded finned tubes, including pressure, flow rate, and other testing items, to ensure product quality and reliability.

III. Performance Characteristics of Steel-Aluminum Extruded Finned Tubes

Steel-aluminum extruded finned tubes possess the following performance characteristics:

1. High-efficiency heat transfer performance: Steel-aluminum extruded finned tubes have a high heat transfer area and heat transfer coefficient, resulting in excellent heat transfer performance. This significantly improves the heat exchange efficiency of heat exchange equipment and reduces equipment costs.

2. Low thermal resistance: Due to the structural characteristics of steel-aluminum extruded finned tubes, their low thermal resistance reduces the temperature difference in heat exchange equipment, improving its heat exchange effect.

3. High adaptability: Steel-aluminum extruded finned tubes are highly adaptable and can operate in harsh environments such as high temperature, high pressure, and high flow rate. They also have a long service life and low maintenance costs.

4. Customizability: Steel-aluminum extruded finned tubes can be customized in different specifications and shapes to meet the requirements of various fields, depending on the application and needs.

5. Good environmental performance: Steel-aluminum extruded finned tubes are manufactured using seamless steel tubes and aluminum fins. The production process does not generate harmful substances and is recyclable, exhibiting excellent environmental performance.

IV. Application Areas of Steel-Aluminum Extruded Finned Tubes

Steel-aluminum extruded finned tubes are widely used in industry as a high-efficiency heat transfer element. In the petrochemical industry, they can be used in various types of heat exchange equipment, such as heaters, coolers, and reboilers; in the refrigeration and air conditioning industry, they can be used in refrigeration units, air conditioning units, and other equipment; in the power industry, they can be used in various types of boilers, water heaters, and other equipment.

Steel-aluminum extruded finned tubes can also be used in other fields requiring high-efficiency heat transfer. As a high-efficiency heat transfer element, steel-aluminum extruded finned tubes have been widely used in many industrial fields. They possess characteristics such as high heat transfer performance, high adaptability, customizability, and good environmental performance. These characteristics make steel-aluminum extruded finned tubes one of the preferred heat transfer elements in many industrial fields.