Why bead boiler tube ends?

Bead boiler tube ends are typically used to enhance the structural integrity and durability of the tube connections in boilers. By bead-welding or forming a bead at the ends of the tubes, it creates a stronger joint that can better withstand high pressures and temperatures. This process also helps to reduce the risk of leaks and increases the overall efficiency of the boiler system. Additionally, bead ends can facilitate easier assembly and maintenance of the boiler.