This reference identifies the geometry and published section data for the Hybox 355 square hollow section shown in the source content. It is intended to help engineers, detailers, estimators, and CAD users interpret the section listing without replacing project-specific verification.
Use the dimensions and properties below alongside related structural steel section properties, steel terminology, and connection and detailing references when developing drawings or reviewing a steel model.
Hybox 355 SHS 350x350x6.0
Hybox 355 Square Hollow Sections
refer to : EN 10219-2:2006-04
the European standard that specifies tolerances, dimensions, and sectional properties for cold-formed welded structural hollow sections made of non-alloy and fine grain steels. It complements EN 10219-1, which covers technical delivery conditions.
Dimension : 350x350x6
Depth : 350 mm
Width : 350 mm
Thickness : 6 mm
Outer Corner Radius : 12 mm
Inner Corner Radius : 6 mm
Sectional Area : 81.6 cm2
Unit Weight : 64.1 kg/m
How to read the Hybox 355 SHS designation
SHS means square hollow section. The 350x350x6 designation describes a square section with a 350 mm depth, a 350 mm width, and a 6 mm wall thickness as reported in the source data. The section also includes separate outer and inner corner radii, which are useful when checking clearances, intersections, end details, and CAD geometry.
Section properties and unit weight
The listed sectional area is a geometric property of the steel cross-section, while the unit weight is reported per metre. These values support quantity checks and preliminary reference work; engineers should verify the governing design assumptions, material specification, loading, stability, and connection requirements for each application.
Standard and CAD reference
The source refers to EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties of cold-formed welded structural hollow sections. It also identifies EN 10219-1 as covering technical delivery conditions. These references should be read with the applicable project requirements and procurement documentation.
A DWG download is provided with the source entry for drafting and model coordination. Before using the file in production documentation, check its units, layer conventions, revision status, and correspondence with the authoritative section data. Related DWG resources and structural steel drafting guidance can help standardize that review.
Frequently asked questions
What does SHS mean?
SHS means square hollow section, a structural steel profile with a square external shape and a hollow interior.
What are the listed dimensions for Hybox 355 SHS 350x350x6?
The source lists a depth of 350 mm, a width of 350 mm, and a thickness of 6 mm.
Why are the corner radii listed separately?
The outer and inner corner radii describe the curved transitions at the section corners. They can matter when checking fit-up, clearances, intersections, and detailed CAD geometry.
Which standard is referenced?
The source refers to EN 10219-2:2006-04 for relevant dimensions, tolerances, and sectional properties, and notes that EN 10219-1 covers technical delivery conditions.
What is the DWG file used for?
The supplied DWG is a CAD reference for drafting and coordination. Confirm its geometry and document controls before using it in issued design or fabrication documents.
