The Hybox 355 SHS 250x250x12 is a square hollow section reference for structural steel detailing and design research. This page records the listed dimensions, corner radii, sectional area, unit weight, and the applicable EN 10219 references without replacing the authoritative source data.
Use the section information alongside project specifications, connection details, and verified design calculations. A DWG download is also provided for drafting workflows where a square hollow-section profile is required.
Hybox 355 SHS 250x250x12.0
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 : 250x250x12
Depth : 250 mm
Width : 250 mm
Thickness : 12 mm
Outer Corner Radius : 36 mm
Inner Corner Radius : 24 mm
Sectional Area : 108 cm2
Unit Weight : 84.8 kg/m
Understanding the Hybox 355 SHS designation
SHS means square hollow section. The designation 250x250x12 identifies the listed outside depth, outside width, and wall thickness. The source data gives a depth of 250 mm, a width of 250 mm, and a thickness of 12 mm.
The section also includes separate outer and inner corner-radius values. These radii describe the rounded transitions between the flat faces of the hollow section and should be retained when preparing accurate CAD details or checking clearances around connections.
Section properties and drafting use
The listed sectional area and unit weight are useful reference properties for material takeoffs, preliminary comparisons, and coordination between design and detailing teams. They should not be treated as a substitute for project-specific verification, loading checks, connection design, or fabrication requirements.
For drawing production, download the supplied DWG and review its geometry against the project’s modeling standards before using it in a fabrication or construction document. Related resources on this site may include square hollow sections, steel section properties, steel connections, and CAD/DWG resources.
EN 10219 reference context
The source identifies EN 10219-2:2006-04 for tolerances, dimensions, and sectional properties of cold-formed welded structural hollow sections made from non-alloy and fine grain steels. It also notes that EN 10219-1 addresses technical delivery conditions. Confirm the project’s specified product standard and procurement requirements before relying on the section in a design or specification.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow steel profile with nominally square outside faces, with rounded corners represented by the listed corner-radius values.
What are the listed dimensions of this section?
The source lists the Hybox 355 SHS as 250x250x12, with a depth of 250 mm, a width of 250 mm, and a thickness of 12 mm.
Why are the corner radii important?
Corner radii affect the actual profile geometry, clearances, connection detailing, and the accuracy of CAD representations. The source lists both an outer corner radius and an inner corner radius.
What properties are provided?
The reference provides a sectional area of 108 cm2 and a unit weight of 84.8 kg/m. These values support reference and coordination work but do not replace project-specific engineering checks.
Where can I get the CAD file?
The page includes a DWG download for the Hybox 355 SHS 250x250x12 profile. Review the downloaded geometry before incorporating it into project drawings.
