ABSTRACT
Different types of hollow flange beams have been developed over the past two decades. These types include either triangular or rectangular hollow flanges, as shown in Figure 1.
Both HFB sections are manufactured from a single sheet strip using a combined process of cold-forming anddual electrical resistancewelding.This unique profile avoidsmany of the problems commonly associated with other cold-formed sections such as flange local buckling, while maintaining a high level of structural efficiency.
