Light steel structure is a kind of young and vital steel structure system, which has been widely used in general industrial and agricultural, commercial and service buildings, such as office buildings, villas, warehouses, stadiums, entertainment, tourism buildings, low and multi-story residential buildings and other fields. It can also be used in areas where old buildings are increased, rebuilt, reinforced and lack of building materials, areas where transportation is inconvenient, construction period is tight, and movable buildings Demolition of buildings, etc

Non residential buildings are mainly door type light steel structures with a span of more than 20 m, which are commonly used in the construction of large-span light industry, electronics, warehouse, processing and other workshops, as well as in supermarkets, temporary houses, aircraft hangars, etc.Light steel structure residential buildings are generally used for multi-story (4-6 floors) and high-rise buildings with height less than 24 m (7-9 floors).By adding energy dissipation components such as energy dissipation braces, the residential light steel structure can also be used for higher buildings.Residential light steel structure is mostly frame structure composed of hot-rolled H-shaped steel, joints are connected by high-strength bolts (supplemented by welding), floor slab is mostly reinforced concrete structure with profiled steel plate substrate instead of form work, roof slab and external wall are mostly color coated steel plate with heat preservation and water resistance, and household wall is mostly waterproof light wall plate.