The steel structure is a structure composed of steel plates, section steels, cold-formed thin-walled steels, etc. by welding or bolting.

Steel structures are one of the main types of building structures.

The steel structure is mainly composed of beam steel, steel column and steel truss made of steel and steel plate, and adopts rust-proof and anti-rust 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 components.

Liming produces and sells various steel structural materials and its cold forming machines, such as light steel keel forming machines and purlin forming machines.