Steel and Aluminum Rolled Tube
Steel-aluminum rolled tube is a composite tube made by rolling process, in which aluminum fins are firmly fixed on the surface of steel tubes, combining the strength of steel tubes with the heat conductivity of aluminum.
Product Introduction
Steel-aluminum rolled tube is a composite metal tube, which is made of steel tube and aluminum fin through rolling process. Steel-aluminum rolled tube is mainly used to manufacture heat exchange equipment, such as radiators and air coolers.
Product Features
High Thermal Conductivity
Steel-aluminum rolled tube is made of aluminum fin and steel tube through composite rolling process. The thermal conductivity of aluminum is as high as 237 W/(m·K), which is much higher than 43 W/(m·K) of steel, which increases the heat transfer coefficient of steel tube by 30-50%, and can improve the heat exchange efficiency.
Structural Tightness
Steel-aluminum rolled tube adopts high-pressure composite rolling technology to mechanically combine aluminum fin with seamless steel tube, without relying on gluing or welding, so the bonding strength can reach 18 MPa, which is much higher than the national standard (≥10 MPa), and can prevent the fin from loosening during thermal cycle.
High Temperature Resistance
Steel-aluminum rolled tube uses 20# or 15CrMo seamless steel tube as the mother tube, and its operating temperature range can reach 350℃ to 450℃. Compared with aluminum alloy integral tubes or copper tubes, its high temperature deformation rate is less than 1.5%, and it can be used normally for a long time when in contact with high temperature media.
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