This reference page covers the Hybox 355 square hollow section identified as 250x250x6.0. It brings together the published dimensions, corner radii, sectional area, unit weight, applicable standard reference, and a downloadable DWG file for drafting workflows.
Use this page alongside related square hollow section references, steel section terminology, and connection-detailing guidance when checking drawings or preparing preliminary design information. The tabulated values on this page remain the controlling local reference for this section.
Hybox 355 SHS 250x250x6.0
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 : 250x250x6
Depth : 250 mm
Width : 250 mm
Thickness : 6 mm
Outer Corner Radius : 12 mm
Inner Corner Radius : 6 mm
Sectional Area : 57.6 cm2
Unit Weight : 45.2 kg/m
How to read the Hybox 355 SHS reference
SHS means square hollow section. The designation identifies a closed, square-profile steel section, while the dimension format communicates the overall outside size and wall thickness. The source data separately lists depth, width, and thickness so each dimension can be checked without relying only on the designation.
Corner geometry
The outer and inner corner radii describe the curved transitions at the section corners. These details matter when interpreting CAD geometry, checking clearances, and coordinating connections or cut details. They should not be treated as sharp-corner dimensions when preparing fabrication drawings.
Section properties and material reference
The listed sectional area and unit weight are reference properties for this specific section. Keep them distinct: sectional area is a geometric property, while unit weight describes the listed mass per unit length. For structural calculations, combine these values with the applicable material, design, fabrication, and connection requirements rather than using the page as a substitute for engineering verification.
Standard and CAD resource
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 this from EN 10219-1, which addresses technical delivery conditions. The linked DWG download can support drafting and coordination; verify the drawing against the authoritative project requirements before release.
Frequently asked questions
What does SHS mean?
SHS means square hollow section, a closed steel profile with a square outside form and a hollow interior.
What dimensions are listed for this Hybox section?
The source lists a 250 mm depth, 250 mm width, and 6 mm thickness, together with the specified outer and inner corner radii.
Which standard is referenced?
The page references EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties, and notes the complementary role of EN 10219-1 for technical delivery conditions.
What is the difference between sectional area and unit weight?
Sectional area describes the steel area through a cross-section. Unit weight expresses the listed mass for a unit length of the section. Both are provided in the source data and serve different checking purposes.
Is a DWG file available?
Yes. The page includes a DWG download for the Hybox 355 SHS 250x250x6 section. Review the file before using it in fabrication or issued-for-construction documentation.
