With a trapezoidal fin section, the product quality is good. According to different media and application requirements, the extruded integral finned tube can be divided into: bimetallic finned tube and monometallic finned tube. The bimetallic finned tube is made by composite rolling of two different materials of metal tubes. The base tube types are: copper, copper alloy, stainless steel, carbon steel, etc. The fin material is pure aluminum, which composes two kinds of bimetallic fins. Tube: Copper-aluminum composite pipe, steel-aluminum composite pipe. The elasticity of the metal strip is used to wind up on the base tube to make the fin and the base tube tightly joined together, and then the fin tube is plated to reduce the thermal contact resistance and enhance the heat transfer performance of the fin tube. According to different fin types and application requirements, finned tubes can be divided into U-shaped finned tubes, open-toothed U-shaped finned tubes, and I-shaped finned tubes.
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