This reference entry covers the Hybox 355 square hollow section (SHS) identified as 300x300x6. It brings the principal dimensional and mass information together with the cited European standard reference and a downloadable DWG file.
Use this page alongside the site’s guidance on structural hollow sections, steel section properties, and CAD/DWG references. The values in the existing reference content are the controlling local data for this section.
Hybox 355 SHS 300x300x6.0
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 : 300x300x6
Depth : 300 mm
Width : 300 mm
Thickness : 6 mm
Outer Corner Radius : 12 mm
Inner Corner Radius : 6 mm
Sectional Area : 69.6 cm2
Unit Weight : 54.6 kg/m
How to read the Hybox 355 SHS reference
The designation 300x300x6 identifies a square hollow section with equal outside depth and width and a stated wall thickness. The source content also reports the outside and inside corner radii, which describe the rounded transitions between the flat faces of the section.
The listed sectional area describes the amount of steel in the cross-section. The unit weight is a mass-per-length value, so it is useful when reviewing material quantities, handling information, and preliminary member schedules. These values should be kept distinct from design resistance or serviceability results, which require project-specific engineering checks.
Standard and drawing reference
The entry cites 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 10219-2 complements EN 10219-1, which addresses technical delivery conditions.
The linked DWG provides a CAD reference for the section profile. Before using it in production drawings or calculations, confirm the drawing units, layer conventions, project requirements, and the applicable fabrication and design assumptions.
Frequently asked questions
What type of section is Hybox 355 300x300x6?
It is a square hollow section, commonly abbreviated as SHS, with the designation 300x300x6.
What dimensions are listed for this section?
The source lists a depth of 300 mm, a width of 300 mm, and a thickness of 6 mm. It also lists an outer corner radius of 12 mm and an inner corner radius of 6 mm.
What sectional area and unit weight are provided?
The reference lists a sectional area of 69.6 cm2 and a unit weight of 54.6 kg/m.
Which standard is referenced?
The entry refers to EN 10219-2:2006-04 and explains that it complements EN 10219-1, which covers technical delivery conditions.
Is a CAD file available?
Yes. The page includes a downloadable DWG reference for the Hybox 355 SHS 300x300x6.0 profile.
