Celsius 355 CHS 21.3×2.9 is a circular hollow section reference for steel detailing, preliminary comparison, and CAD work. The source block below provides the listed diameter, wall thickness, sectional area, unit weight, and standard reference.
Use the accompanying DWG when a digital section reference is needed for drafting. For design work, confirm the applicable material requirements, loading assumptions, connection details, and project specification with the responsible engineer.
Celsius 355 CHS 21.3×2.9
Celsius 355 Circular Hollow Sections
refer to : EN 10210-2:2006-04
the European standard that specifies tolerances, dimensions, and sectional properties for hot-finished structural hollow sections of non-alloy and fine grain steels. It supports EN 10210-1, which covers technical delivery conditions.
Diameter : 21.3 mm
Thickness : 2.9 mm
Sectional Area : 1.68 cm2
Unit Weight : 1.3 kg/m
How to read this CHS reference
CHS means circular hollow section. The diameter and thickness describe the listed tube geometry, while the sectional area represents the steel area through a cross-section. Unit weight expresses the listed mass per unit length and can support estimating and material takeoff workflows.
Standard and delivery reference
The source identifies EN 10210-2:2006-04 for dimensional, tolerance, and sectional-property information associated with hot-finished structural hollow sections. It also notes the relationship to EN 10210-1, which addresses technical delivery conditions. Always check the project specification to confirm that the referenced product requirements apply.
Using the CAD download
The downloadable DWG is useful for drawing layouts, detail development, and coordination. Treat the file as a drafting reference rather than a substitute for checking the supplied steel section, fabrication requirements, connection design, or construction tolerances.
Related reference topics
- Use this page alongside a general CHS terminology guide when comparing circular hollow sections.
- Review section properties guidance before applying area or mass data in calculations.
- Connect this reference to broader resources for EN 10210, structural steel detailing, and DWG downloads.
Frequently asked questions
What does CHS mean?
CHS stands for circular hollow section, a steel hollow profile with a circular outside form.
Which standard is referenced on this page?
The source references EN 10210-2:2006-04 and describes its connection with EN 10210-1. Use the project specification and current procurement documentation to verify the applicable requirements.
What is the DWG file used for?
The DWG provides a CAD reference for drafting and coordination. It should be checked against the supplied product and project documentation before fabrication or construction use.
Can the listed properties be used directly for structural design?
The listed values are a reference from the source content. Structural design still requires verification of material, loading, stability, connections, fabrication, and applicable design rules.
