This reference page identifies the Celsius 355 circular hollow section (CHS) designated 168.3×5.6. Use it to check the section’s listed geometry, sectional area, unit weight, and applicable European standard reference before using the data in calculations or drawings.
The preserved source data below is the controlling reference for this page. For related guidance, see the SteelSTD resources on CHS terminology, section properties, steel connection detailing, and CAD/DWG references.
Celsius 355 CHS 168.3×5.6
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 : 168.3 mm
Thickness : 5.6 mm
Sectional Area : 28.6 cm2
Unit Weight : 22.5 kg/m
How to read this CHS designation
In the designation 168.3×5.6, the first value identifies the outside diameter and the second identifies the wall thickness. The source lists these as a diameter of 168.3 mm and a thickness of 5.6 mm.
Reference properties
The listed sectional area is 28.6 cm2, while the listed unit weight is 22.5 kg/m. These values are useful when reviewing section schedules, material takeoffs, and design calculations. Keep the units consistent with the rest of the calculation and confirm whether a project workflow requires additional geometric or resistance properties.
Standard and drawing reference
The source refers to EN 10210-2:2006-04 for dimensions, tolerances, and sectional properties, with the delivery-condition relationship identified in the original content. The associated DWG download can support drafting and coordination, but drawing geometry should be checked against the project’s approved model and detailing requirements.
Using the data responsibly
This page is a section reference, not a complete design verification. Member resistance, stability, connection behavior, fabrication requirements, and project-specific compliance require review by a suitably qualified engineer using the applicable project criteria.
Frequently asked questions
What does Celsius 355 CHS 168.3×5.6 mean?
It identifies a Celsius 355 circular hollow section with a listed outside diameter of 168.3 mm and wall thickness of 5.6 mm.
What sectional area is listed for this CHS?
The source lists a sectional area of 28.6 cm2.
What is the listed unit weight?
The listed unit weight is 22.5 kg/m. Use the value with consistent units when preparing material quantities or design calculations.
Which standard is referenced?
The source refers to EN 10210-2:2006-04 and explains its relationship to EN 10210-1 in the preserved technical content.
Is the DWG suitable for construction issue?
The DWG is a drafting reference. It should be checked against the approved project model, connection details, fabrication requirements, and engineer-reviewed documentation before issue.
