One Coil, Endless Possibilities – Meet CNB’s Customized Aluminized Steel Tube (DX53D+AS)

Engineered for extreme environments, CNB’s aluminized steel tube (grade DX53D+AS120) combines the heat resistance of aluminum-silicon alloy with the strength of a low-carbon steel base. Unlike standard galvanized pipes, our AS-coated tubes maintain structural integrity at temperatures up to 550°C, making them ideal for automotive exhaust systems, industrial ovens, barbecue grills, and HVAC ducting.

What sets CNB apart? We use ultrasonic welding (Panasonic-grade) and fill the weld seam with aluminum—not zinc—ensuring better high-temperature performance and consistent flaw detection. Plus, with our own stock of HBIS aluminized coils (0.8mm–2.5mm), we can customize outer diameters, lengths, and even bending or punching to your drawings.

Whether you need 10 meters for a prototype or 50 tons for a shipyard order, CNB delivers traceable quality with mill test certificates. Upgrade your project with true aluminized performance.