Lightweight Z, C and Sigma steel sections, second grade, stock lengths

The amount of steel needed depends on the shape of the member as well as its thickness. Cold-formed channels, Z sections and Sigma profiles use their geometry to carry specified loads. Common roles include purlins, side rails and lightweight secondary steelwork. Their geometry can be tailored to the job while keeping the weight low.

Folding a strip places steel where it provides stiffness. A thin-walled section can therefore have better stiffness for its weight than a flat strip containing a similar amount of steel. Edge stiffeners also affect its behaviour. C, Z and Sigma profiles suit different loading directions, support spacings and fixing positions. Where the detailed design allows it, selecting the section from its verified properties can reduce the weight of the secondary frame while meeting its required function.

Purlins and side rails transfer cladding loads to the main frame. Cold-formed sections can provide this intermediate support with lightweight members that are easier to transport and position. Where a hot-rolled section would have surplus capacity, a suitably designed cold-formed section may do the job at lower weight. Across a large roof the saving can add up. Choose section depth and thickness for the cladding, from light sheet to sandwich panels, so that steel is used where the loads require it.

Factory-formed sections have defined dimensions that help with connection design and cladding layout. Where the system allows, pre-punched holes reduce site work. A section shaped for its purpose can replace the task of assembling a similar shape from several pieces. This can help on halls and canopies with repeated bays. Choose surface protection, including galvanising where appropriate, for the service environment. Suitable lengths make better use of the available steel. Together these choices produce secondary framing compatible with the cladding it supports.

SteelProfil supplies first- and second-grade cold-formed sections, with selected stock ready for collection. We can compare available sections and lengths with your project specification. Competitive prices and promotions cover both larger frames and smaller cladding jobs.