Square hollow sections (SHS) is another popular type of structural steel tube that’s kind of a middle- man between RHS and CHS in terms of attributes, appearance and structural behaviour. SHS features a flat surface that’s also economical for joining and welding, with clean lines & minimal edge preparation required. SHS also features attributes of CHS, with is symmetrical appearance, formed in equal sided square hollow sections – as opposed to circular sections. SHS provides an ideal balance between strength, functionality and aesthetic appearance for a multitude of applications that require all three aspects