Universal Mandrel: This universal mandrel is engineered from imported SUJ2 bearing steel, with a hard chrome-plated surface for enhanced durability and wear resistance. Its ball head offers full directional movement, making it highly versatile for use with long U-tube bending machines to efficiently bend copper and aluminum tubes. The mandrel ensures that the bent tubes are smooth, wrinkle-free, and free from scratches, making it ideal for use in the production of heat exchangers, evaporators, and condensers. It can handle tube diameters from Φ4.76 to Φ15.88, with customizable options available.