The Hybox 355 SHS 120x120x4 is a square hollow section reference for checking section dimensions, corner geometry, sectional area, and unit weight. This page also identifies the referenced European standard and provides a DWG file for drafting workflows.
Use the source values below when coordinating steel shape schedules, connection details, fabrication drawings, or CAD models. For related terminology, see the site’s references on square hollow sections, steel section properties, and structural steel connections.
Hybox 355 SHS 120x120x4
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 : 120x120x4
Depth : 120 mm
Width : 120 mm
Thickness : 4 mm
Outer Corner Radius : 8 mm
Inner Corner Radius : 4 mm
Sectional Area : 18.1 cm2
Unit Weight : 14.2 kg/m
How to read this SHS reference
The designation 120x120x4 describes the listed outside depth, outside width, and wall thickness. Because the section is square, the depth and width shown in the source are the same. The corner radii identify the outside and inside transition geometry rather than a sharp-cornered profile.
The listed sectional area is useful when reviewing section-property data and material takeoffs. The unit weight supports weight-based estimating and coordination, but project calculations should use the applicable design basis and verified manufacturer or project data.
Standard reference and CAD use
The source refers to EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties of cold-formed welded structural hollow sections. It also notes the relationship with EN 10219-1, which covers technical delivery conditions. Treat the standard reference as part of the identification record and confirm the required edition, material specification, tolerances, and delivery documentation for the project.
The downloadable DWG can help with layout and detailing. Before using it in a design or fabrication package, check the drawing units, layer structure, corner representation, and geometry against the authoritative project data. Link this page to related resources for DWG steel sections, hollow-section detailing, and structural steel terminology.
Design and detailing checks
- Confirm that the selected section designation matches the project schedule and material documentation.
- Use the listed corner radii when reviewing clearances, interfaces, and connection detailing.
- Do not infer unlisted resistance, buckling, or connection capacity from the dimensions alone.
- Verify the final geometry and properties against the governing project specification before issuing design or fabrication documents.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow steel profile with square outside dimensions, subject to the specified wall and corner geometry.
What does 120x120x4 describe?
For this listing, 120x120x4 identifies the listed depth, width, and thickness: 120 mm depth, 120 mm width, and 4 mm thickness.
Which standard is referenced for this section?
The source references 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.
What corner geometry is listed?
The source lists an outer corner radius of 8 mm and an inner corner radius of 4 mm. These values should be considered when checking interfaces and drawing the profile.
What section data is provided?
This reference provides the sectional area of 18.1 cm2 and the unit weight of 14.2 kg/m, along with the principal dimensions and corner radii.
Is a CAD file available?
Yes. The page includes a DWG download for the Hybox 355 SHS 120x120x4 profile. Review the file against the source dimensions before incorporating it into project documentation.
