The Hybox 355 SHS 180x180x5 is a square hollow section reference for structural steel detailing, section identification, and preliminary design review. This page brings together the source dimensions, corner radii, sectional area, unit weight, applicable standard reference, and a downloadable DWG resource.
Use the dimensional data with the project specification and the applicable design method. Section selection, connection detailing, local checks, and member verification should be completed by a qualified engineer using the governing project requirements.
Hybox 355 SHS 180x180x5
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 : 180x180x5
Depth : 180 mm
Width : 180 mm
Thickness : 5 mm
Outer Corner Radius : 10 mm
Inner Corner Radius : 5 mm
Sectional Area : 34.4 cm2
Unit Weight : 27 kg/m
How to read the Hybox 355 SHS designation
SHS means square hollow section. In the designation 180x180x5, the first two dimensions identify the nominal outside depth and width, while the final dimension identifies the nominal wall thickness. The source data lists a depth of 180 mm, a width of 180 mm, and a thickness of 5 mm.
Corner geometry and section data
The listed outer corner radius is 10 mm and the inner corner radius is 5 mm. These radii describe the rounded corners of the welded hollow section and should be considered when interpreting drawings, clearances, connection details, and section-property references.
The source lists a sectional area of 34.4 cm2 and a unit weight of 27 kg/m. These are reference properties for identifying and comparing the section. They should not be treated as a substitute for the member checks required by the design standard or project specification.
Applicable standard reference
The page refers to EN 10219-2:2006-04 for dimensional tolerances, dimensions, and sectional properties for cold-formed welded structural hollow sections. The source also identifies EN 10219-1 as covering technical delivery conditions. Link this page to the site’s related EN 10219-2, structural hollow section, and steel terminology references to help readers move from the section entry to the governing documentation.
DWG download and drafting use
The supplied DWG resource can support CAD-based layout and detailing workflows. Confirm the downloaded geometry against the authoritative section data and project requirements before using it for fabrication, connection detailing, or issued drawings.
Frequently asked questions
What does Hybox 355 SHS 180x180x5 identify?
It identifies a Hybox 355 square hollow section with a nominal depth of 180 mm, width of 180 mm, and thickness of 5 mm.
What are the listed corner radii?
The source lists an outer corner radius of 10 mm and an inner corner radius of 5 mm.
Which standard is referenced for this section?
The section entry refers to EN 10219-2:2006-04 for relevant dimensional, tolerance, and sectional-property information, with EN 10219-1 identified for technical delivery conditions.
Is a DWG file available?
Yes. The page includes a DWG download for Hybox 355 SHS 180x180x5. Review the file against the source dimensions before incorporating it into project drawings.
