Steel structure is also called steel skeleton, abbreviated as SC (steel construction) in English, which refers to the building structure form that uses steel components to bear loads. It is usually composed of vertical steel columns and horizontal I-beams in a rectangular grid to form a skeleton to support the floors, roofs, and walls of the building.

A steel structure is a structure made of steel materials and is one of the main types of building structures. Globally, especially in developed countries and regions, steel structures are reasonably and widely used in the field of construction engineering. The steel structure industry is usually divided into five subcategories: light steel structure, high-rise steel structure, residential steel structure, space steel structure, and bridge steel structure.

The steel structure is mainly composed of beam steel, steel column, steel truss, and other components made of steel and steel plate, and adopts rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. Welds, bolts, or rivets are usually used to connect the components or parts.

The steel structure is mainly used in bridges, buildings, lighthouses, ships, and other fields. In addition to steel structures, there are also wooden structures, concrete structures, brick-concrete structures, and other structures.

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