Recent innovations in cold-formed tubular sections

Cold-formed tubular sections are widely used in many modern steel structures. Two innovative cold-formed sections have been introduced to the Australian building industry. They are the 'in-line' galvanized rectangular hollow section (RHS) tubes and the hollow flange beams (HFB). They offer significant advantages but at the same time provide challenges to designers because of their special characteristics. The application, manufacturing, advantages and characteristics of these two sections are described.