Truong Phu Steel Structure usually refers to a building technique with a " steel frame" of vertical steel column and horizontal I - beam, constructed in a rectangular grid to support the floors, roof and walls of a building which are all attached to the frame. The development of this technique made the construction of the skyscraper and some others stell Industrial application possible.

Structural steel is steel construction material, a profile, formed with a specific shape or cross section and certain standards of chemical composition and mechanical properties. Structural steel shape, size, composition, strength, storage, etc., is regulated in most industrialized countries.