This reference page identifies the Hybox 355 square hollow section with a 250x250x8 designation. It brings together the source dimensions, corner-radius information, sectional area, unit weight, applicable standard reference, and a CAD download for drafting workflows.
Use the values below as a section-reference aid, then confirm material, loading, connection details, fabrication requirements, and design assumptions against the governing project documentation.
Hybox 355 SHS 250x250x8
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 : 250x250x8
Depth : 250 mm
Width : 250 mm
Thickness : 8 mm
Outer Corner Radius : 20 mm
Inner Corner Radius : 12 mm
Sectional Area : 75.2 cm2
Unit Weight : 59 kg/m
How to read the Hybox 355 SHS designation
SHS means square hollow section. The 250x250x8 designation identifies the section depth, width, and wall thickness shown in the source data. Because the depth and width are equal, the profile has a square outside form.
Section dimensions and properties
The listed corner radii describe the transition between the flat faces of the hollow section. These details matter when preparing accurate fabrication drawings, checking clearances, or coordinating end plates, stiffeners, and connected members. The sectional area and unit weight provide distinct reference information: area supports section-property and design calculations, while unit weight supports material takeoffs and handling estimates.
Standard and CAD reference
The source identifies EN 10219-2:2006-04 for dimensional, tolerance, and sectional-property information for cold-formed welded structural hollow sections. It also distinguishes EN 10219-1 as the standard covering technical delivery conditions. For broader context, link this page to the site’s structural hollow sections, steel section properties, steel tolerances, and EN 10219 reference pages.
The accompanying DWG download can support drafting and layout work. Review the drawing units, layer conventions, and project-specific detailing requirements before incorporating downloaded geometry into issued documents.
Frequently asked questions
What is the size of this Hybox 355 SHS?
The listed designation is 250x250x8. The source gives a depth of 250 mm, a width of 250 mm, and a thickness of 8 mm.
What are the listed corner radii?
The outer corner radius is 20 mm, and the inner corner radius is 12 mm.
What is the sectional area?
The listed sectional area is 75.2 cm2.
What is the unit weight?
The listed unit weight is 59 kg/m.
Which standard is referenced?
The source refers to EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties, and notes EN 10219-1 for technical delivery conditions.
Is a CAD file available?
Yes. The page includes a DWG download for the Hybox 355 SHS 250x250x8 profile. Check the downloaded file against the source dimensions before using it in project documentation.
