The Hybox 355 SHS 70x70x6 is a square hollow structural section reference for checking key dimensions, corner radii, sectional area, and unit weight. The data below also identifies the EN 10219-2 reference associated with the section.
Use this page alongside related resources on structural steel shapes, section properties, and steel CAD and DWG details when reviewing design or drafting information.
Hybox 355 SHS 70x70x6
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 : 70x70x6
Depth : 70 mm
Width : 70 mm
Thickness : 6 mm
Outer Corner Radius : 12 mm
Inner Corner Radius : 6 mm
Sectional Area : 14.4 cm2
Unit Weight : 11.3 kg/m
How to read the Hybox 355 SHS reference
The designation 70x70x6 describes a square hollow section with a 70 mm depth, a 70 mm width, and a 6 mm wall thickness. Because the section is hollow, its external dimensions and wall thickness should be read together when identifying the profile.
Corner radii and section geometry
The listed outer and inner corner radii describe the rounded transitions at the corners of the cold-formed section. These details are important when comparing drawings, preparing fabrication details, or checking how a section is represented in CAD. They should not be interpreted as sharp-corner geometry.
Sectional area and unit weight
The sectional area is a geometric property of the profile, while the unit weight indicates the listed mass per metre. These values are useful for reference, quantity takeoffs, and preliminary comparison of steel sections. Final design checks should use the governing project requirements and be verified by a qualified engineer.
Standard reference
The page identifies 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. For broader terminology, link this page to the site’s reference on steel standards and structural hollow sections.
Using the DWG reference
The downloadable DWG can support drafting and coordination workflows. Confirm units, layer conventions, project revisions, and the intended representation before incorporating the file into production drawings.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow steel profile with square external geometry and rounded corners rather than a solid square bar.
What does 70x70x6 mean?
For this reference, 70x70x6 identifies a 70 mm depth, a 70 mm width, and a 6 mm wall thickness.
Why are the corner radii listed?
Corner radii define the curved transitions at the inside and outside corners. They help distinguish the actual section geometry from a simplified sharp-corner sketch.
What is the EN 10219-2 reference used for?
The page uses EN 10219-2:2006-04 as the reference for dimensions, tolerances, and sectional properties associated with cold-formed welded structural hollow sections. EN 10219-1 is identified separately for technical delivery conditions.
