Roundabout empty segments are utilized as sections and props as a part of gateway edges structures. An illustration is a 114.3 x 5 CHS, which has a distance across of 114.3 mm and the divider is 5 mm thick. . Correspondingly to RHS and SHS areas, hot moved CHSs are made at the factory as one piece, though frosty shaped CHSs are made of a level sheet moved at a span and welded. It is in this way simple to take note of the distinction, as the cool moved CHSs have a weld up and down its length.