This reference page identifies the Hybox 355 square hollow section with a 30x30x2.5 designation. It brings together the published dimensions, corner geometry, sectional area, unit weight, applicable standard reference, and a CAD/DWG resource for drafting and design review.
Hybox 355 SHS 30x30x2.5
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 : 30x30x2.5
Depth : 30 mm
Width : 30 mm
Thickness : 2.5 mm
Outer Corner Radius : 5 mm
Inner Corner Radius : 2.5 mm
Sectional Area : 2.59 cm2
Unit Weight : 2 kg/m
How to read this SHS reference
SHS means square hollow section. The designation communicates the nominal outside depth and width together with the wall thickness. For this profile, the listed depth and width are equal, giving the section its square outside form.
The corner radii are important when interpreting a hollow-section profile in drawings or CAD. They describe the transition between the flat faces and help distinguish the actual rounded manufactured shape from a simplified sharp-corner sketch.
Standard and technical context
The page references EN 10219-2 for dimensional tolerances, dimensions, and sectional properties of cold-formed welded structural hollow sections. The source also identifies EN 10219-1 as the standard covering technical delivery conditions. Use the site’s related EN 10219 and structural hollow section references to review terminology and standard scope before applying the data to a project.
Using the listed properties
The sectional area is useful when reviewing material quantity and section-property data, while the unit weight supports estimating and schedule coordination. These values describe the published section; they do not by themselves establish resistance, connection capacity, or suitability for a particular structural application. Design use should be checked against the governing project requirements and verified by a qualified engineer.
A DWG download is provided with this reference for drafting workflows. Confirm the profile geometry and drawing units against the project setup before incorporating the file into fabrication or construction documents.
Frequently asked questions
What does SHS mean?
SHS means square hollow section, a hollow steel profile with square outside dimensions and a continuous wall around the opening.
What does 30x30x2.5 describe?
It identifies the nominal outside depth, nominal outside width, and wall thickness listed for this profile.
Which standard is referenced for this Hybox 355 section?
The source references EN 10219-2 for dimensions, tolerances, and sectional properties, and notes that EN 10219-1 covers technical delivery conditions.
Why are the corner radii listed?
Corner radii define the rounded transitions between the flat sides of the cold-formed hollow section. They are useful when checking CAD geometry, clearances, and detailing.
Is a DWG file available?
Yes. A DWG download is provided with the reference page for use in CAD and drafting workflows. Review the file against the published profile information before issuing project documentation.
