Purlins, wall beams (wall purlins) and cornice support beams are used as sub-structural systems to provide support and stability for the main structural system, and their stability and durability directly affect the safety of the main structure. The common steel purlins are z-shaped steel purlins and c-shaped steel purlins, which are suitable for all aspects of steel structure engineering, such as roofing and wall beams. High frequency welded H section steel is a kind of economical section steel with better section area distribution and more reasonable ratio of strength to weight, under the same load, it can save 10% -15% metal, 30% -40% structure weight can be reduced on the building, 15% -20% on the bridge. Compared with hot-rolled h-beam, it has the advantages of light and even wall thickness, better cross-section characteristics, higher dimensional accuracy and can be customized according to specified requirements Short delivery period, easy installation and construction.

Z-beam

C-section steel

High frequency welding H-beam