Hybox 355 SHS 180x180x6.3 is a square hollow structural section with equal outside depth and width. This reference brings the published dimensions, corner geometry, sectional area, unit weight, standard reference, and DWG resource together for engineering and drafting workflows.
Use the values below as a section-identification reference. For member sizing, resistance checks, connection detailing, and fabrication decisions, confirm the applicable project requirements and have the design verified by a qualified engineer.
Hybox 355 SHS 180x180x6.3
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 : 180x180x6.3
Depth : 180 mm
Width : 180 mm
Thickness : 6.3 mm
Outer Corner Radius : 15.8 mm
Inner Corner Radius : 9.4 mm
Sectional Area : 42.4 cm2
Unit Weight : 33.3 kg/m
How to read this SHS designation
SHS means square hollow section. The 180x180x6.3 designation identifies the outside depth, outside width, and nominal wall thickness shown in the source data. Because the first two dimensions are equal, the section has a square outside profile.
For background terminology, see the square hollow section guide and the reference page on steel section dimensions. These resources can help distinguish outside dimensions from wall thickness and corner geometry.
Corner radii and section geometry
The listed outer and inner corner radii describe the rounded transitions between the flat sides of the tube. They are important when interpreting drawings, checking clearances, preparing connection details, or comparing a nominal SHS designation with a manufacturer’s dimensional data.
Corner geometry also affects how the section is represented in CAD. Use the supplied DWG as a drafting reference, while checking project-specific fabrication requirements before using it for final production documentation.
Sectional area and unit weight
The source lists a sectional area of 42.4 cm2 and a unit weight of 33.3 kg/m. Sectional area is commonly used in member calculations, while unit weight supports material takeoff and preliminary mass estimates. These values should not be treated as a complete design-resistance or connection-capacity check.
Standard 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. Consult the applicable project specification and the complete standard documentation when compliance or procurement decisions depend on them.
For related background, visit the EN 10219 reference guide, the hollow-section connections overview, and the site’s steel section CAD and DWG resources.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow steel profile with equal outside depth and width, subject to the listed corner radii.
What are the dimensions of Hybox 355 SHS 180x180x6.3?
The source lists a depth of 180 mm, a width of 180 mm, and a thickness of 6.3 mm. It also lists an outer corner radius of 15.8 mm and an inner corner radius of 9.4 mm.
What is the sectional area of this SHS?
The published sectional area is 42.4 cm2. Use the project’s required design method and material documentation for engineering checks.
What is the unit weight?
The listed unit weight is 33.3 kg/m. This value can support material estimates, but handling and procurement documentation should be checked against the supplied product.
Which standard is referenced?
The source refers to EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties, with EN 10219-1 identified for technical delivery conditions.
Is a CAD file available?
Yes. The page includes a DWG download for this Hybox 355 SHS section. Review the drawing before incorporating it into final fabrication or construction documents.
