钢铝复合翅片管定义：钢铝复合翅片管其加工工艺由铝管与铜管先加工成双金属复合管，再经机械冷轧，利用铝管的物理特性，制成以钢管为芯的管与冷轧成的铝翅片紧密结合为一体的翅片管。钢铝复合翅片管散热器广泛应用于在采暖空调工程中进行湿式冷却时易排除翅片外表面凝结水，在干燥加热及其它热交换场合不易结尘、结垢。
Definition of steel-aluminium composite finned tube: The processing technology of steel-aluminium composite finned tube is that aluminum tube and copper tube are processed into bimetallic composite tube first, then cold-rolled by machine. By utilizing the physical characteristics of aluminium tube, the finned tube with steel tube as core is closely integrated with cold-rolled aluminium fin tube. Steel-aluminium composite finned tube radiator is widely used in heating and air-conditioning engineering for wet cooling. It is easy to remove condensate water on the outer surface of fins, and it is not easy to deposit dust and scale in drying, heating and other heat exchange occasions. 钢铝复合翅片管特点：
Characteristics of steel aluminum composite fin tube:
1.具有结合紧密，热阻小，传热性能好；
1., it has the advantages of close combination, small heat resistance and good heat transfer performance.
2. 强度高、流动损失小；
2. high strength and small flow loss.
3. 防腐蚀性能强，在长期冷热工情况下不易变形、工作寿命长。
3. the corrosion resistance is strong, and it is not easy to deform and work long life under the condition of long term cold and hot work.
钢铝复合翅片管结构示意图：
Schematic diagram of steel aluminum composite fin tube structure: