The Hybox 355 SHS 70x70x4 is a square hollow section reference for steel detailing and section-property checks. This page brings together the profile dimensions, corner radii, sectional area, unit weight, applicable standard context, and a downloadable DWG resource.
Use the existing data block as the dimensional reference for this section. The explanatory notes below clarify how to read the designation and how the standard reference relates to fabrication and documentation.
Hybox 355 SHS 70x70x4
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 : 70x70x4
Depth : 70 mm
Width : 70 mm
Thickness : 4 mm
Outer Corner Radius : 8 mm
Inner Corner Radius : 4 mm
Sectional Area : 10.1 cm2
Unit Weight : 7.9 kg/m
How to read the Hybox 355 SHS designation
SHS means square hollow section. In 70x70x4, the first two values identify the nominal outside depth and width, while the final value identifies the wall thickness. The source data lists a depth of 70 mm, a width of 70 mm, and a thickness of 4 mm.
Corner radii and section data
The profile has an outer corner radius of 8 mm and an inner corner radius of 4 mm. These radiused corners are part of the section geometry and should be considered when interpreting drawings, clearances, connections, and CAD representations.
The listed sectional area is 10.1 cm2, and the listed unit weight is 7.9 kg/m. These values are reference properties for this specific section entry; project calculations should use the applicable design method, material information, and connection details required for the application.
Standard reference
The source refers to EN 10219-2:2006-04. In practical terms, this standard addresses dimensions, tolerances, and sectional properties for cold-formed welded structural hollow sections made from non-alloy and fine grain steels. The source also identifies EN 10219-1 as the related standard covering technical delivery conditions.
Using the DWG reference
The downloadable DWG can support drafting and CAD workflows involving this SHS profile. Check the drawing against the source dimensions before incorporating it into a project model, fabrication drawing, or connection detail. For broader guidance, readers may also benefit from related references on steel shape dimensions, hollow-section terminology, section properties, and structural steel detailing.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow steel profile with nominally equal outside depth and width.
What do the numbers 70x70x4 represent?
They identify the nominal outside depth, nominal outside width, and wall thickness. For this entry, those dimensions are 70 mm, 70 mm, and 4 mm.
What are the corner radii for this section?
The listed outer corner radius is 8 mm, and the listed inner corner radius is 4 mm. Use these values when checking the section geometry or its CAD representation.
Which standard is referenced?
The source references EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties of cold-formed welded structural hollow sections. It also notes that EN 10219-1 covers technical delivery conditions.
What information is provided for section properties?
The entry lists a sectional area of 10.1 cm2 and a unit weight of 7.9 kg/m. These are reference values for the listed Hybox 355 SHS profile.
Is the DWG file a substitute for engineering design?
No. The DWG is a drafting reference. Engineers and detailers should verify dimensions, material requirements, tolerances, loads, connections, and project-specific design criteria before relying on the profile in a design.
