POST IS STILL INCOMPLETE
Gone are the days when fabrication shopfloor capabilities were just limited to cut to length and holes operation. Today's requirement in the energy, infrastructure and construction sectors demand capabilities to produce complex parts to support innovation in structural design and analysis. The excellent distribution of the material around the centroidal axis of closed structurals exhibits remarkable strength qualities, and thus offers decisive advantages in its applications. Compared to conventional sections, hollow sections result in reduced use of steel. Square and rectangular hollow sections were shop fabricated by welding or jointing together structural plates and sections. This involved expensive fabrication, restricting architectural expressions to traditional steel forms.