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.
Structural steel members, such as I-beams, have high second moments of area, which allow them to be very stiff in respect to their cross-sectional area.

• European I-beam: IPE – Euronorm 19-57

• European I-beam: IPN – DIN 1025-1

• European flange beams: HE – Euronorm 53-62

• European channels: UPN – DIN 1026-1

• European cold formed IS IS 800-1