This reference identifies a Hybox 355 square hollow section (SHS) and brings together its listed geometry, corner radii, sectional area, unit weight, applicable standard reference, and CAD download. Use the dimensional data as a reference when checking drawings, schedules, or preliminary connection layouts.
For related background, see the site’s references on SHS terminology, steel section properties, and cold-formed welded hollow sections. Any structural application should be checked against the governing design standard, loading, connection details, fabrication requirements, and project specifications.
Hybox 355 SHS 250x250x12.5
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 : 250x250x12.5
Depth : 250 mm
Width : 250 mm
Thickness : 12.5 mm
Outer Corner Radius : 37.5 mm
Inner Corner Radius : 25 mm
Sectional Area : 112 cm2
Unit Weight : 87.9 kg/m
How to read this SHS reference
The designation identifies a square hollow section with equal outside depth and width and a specified wall thickness. The listed outer and inner corner radii describe the rounded transitions between the flat faces of the section. These details matter when sections meet at connections, when clearances are checked, and when a model or fabrication drawing must represent the profile accurately.
Sectional area is a geometric property used in axial and material-quantity calculations. Unit weight expresses the listed mass per unit length and can support estimating, handling, and schedule preparation. Neither value, by itself, establishes the resistance of a member; design checks also depend on material properties, buckling conditions, restraint, connection behavior, and applicable code provisions.
Standard and CAD reference
The source cites EN 10219-2:2006-04 for dimensional, tolerance, and sectional-property information for cold-formed welded structural hollow sections. It also notes the relationship with EN 10219-1, which addresses technical delivery conditions. Confirm the project-required standard and edition before using the reference for procurement or design documentation.
A DWG download is provided with this entry for drafting and coordination. Treat downloaded geometry as a reference representation: verify units, layer conventions, corner-radius depiction, and compatibility with the project model before issuing drawings. Related internal resources may include the site’s DWG section library, steel detailing guidance, and hollow-section connection references.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a closed steel profile with square outside geometry and a hollow interior, subject to the corner radii listed in the reference.
What information is included for this Hybox 355 section?
The entry lists the section designation, standard reference, depth, width, thickness, outer and inner corner radii, sectional area, unit weight, and a DWG download.
What is the role of EN 10219-2 in this entry?
It is cited as the reference for dimensions, tolerances, and sectional properties of the relevant cold-formed welded structural hollow sections. The source separately identifies EN 10219-1 as covering technical delivery conditions.
Can the DWG be used directly for structural design?
The DWG is useful for drafting and coordination, but it does not replace engineering verification. Check the downloaded geometry, project units, material specification, design assumptions, and connection details before using it in issued documentation.
