Industry applications
Architectural exposed steel, trusses, columns, marine and offshore structures, handrails, balustrades, signage gantries and lattice towers.
Pipes & Hollow Sections · Structural circular tube
Circular Hollow Sections (CHS)
Circular hollow structural sections
Circular Hollow Sections (CHS) are closed circular cross-section structural steel tubes manufactured to EN 10210 (hot-finished) or EN 10219 (cold-formed). The closed circular geometry delivers high torsional stiffness, equal stiffness in all directions, and a clean aesthetic for exposed architectural steel.
Closed circular geometry
Hot-finished & cold-formed
Architectural exposed steel
EN 10210 / 10219 compliant
Standards
EN 10210 (hot-finished), EN 10219 (cold-formed)
Grades
S235JRH, S275J0H, S355J2H
OD range
21.3 – 711 mm
Wall thickness
2.0 – 25 mm
Length
6 / 12 m
Finish
Black / primed / galvanised
Quick reference
Circular Hollow Sections (CHS): the essentials.
A concise, citation-ready summary used by search engines, AI assistants and procurement teams to answer common questions about circular hollow sections (chs).
- Circular Hollow Sections (CHS) are seamless or welded steel tubes used for structural framing where torsion, biaxial bending or aesthetic exposed steel is required.
- Standard sizes from OD 21.3 mm to OD 1219 mm; wall thickness 2 – 50 mm.
- Manufactured to EN 10210 (hot-finished) and EN 10219 (cold-formed); ASTM A500 / A53 in the US market.
- Grades S275J0H, S355J2H (EN); A500 Gr.B / C (ASTM).
- Specified for architectural exposed steel, trusses, space frames, jetty piles and offshore structures.
Specifications
Circular Hollow Sections (CHS): full technical data.
Indicative mill data. Customised grades, sizes and certifications available on request.
| Property | Value |
|---|---|
| Standards | EN 10210-1/2 (hot-finished), EN 10219-1/2 (cold-formed), ASTM A500 / A53 |
| Grades | S235JRH, S275J0H, S355J2H, A500 Gr.B/C |
| OD range | 21.3, 26.9, 33.7, 42.4, 48.3, 60.3, 76.1, 88.9, 101.6, 114.3, 139.7, 168.3, 219.1, 273.0, 323.9, 355.6, 406.4, 457, 508, 610, 711 mm |
| Wall thickness | 2.0 – 25 mm |
| Lengths | 6, 12 m |
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Comparison
Hot-Finished (EN 10210) vs Cold-Formed (EN 10219) CHS
| Property | Hot-Finished CHS | Cold-Formed CHS |
|---|---|---|
| Process | Hot-rolled & welded above recrystallisation temperature | Cold-rolled & welded at room temperature |
| Mechanical properties | Uniform through section | Slight strain-hardening at corners |
| Cost | Higher | Lower |
| Tolerances | EN 10210-2 | EN 10219-2 (tighter dimensional) |
| Use | Critical structural, low-temp service | General structural, architectural |
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Visual profile
Engineering cross-section.
Reference cross-section diagram showing the principal dimensions used in structural specification. Detailed dimension tables, weight per metre and section properties are available in our full data sheet. Share your project requirement and we'll send a tailored specification pack.
Request data sheetApplications
Where Circular Hollow Sections (CHS) is specified.
- Architectural exposed steel
- Trusses & space frames
- Columns
- Marine & offshore structures
- Handrails & balustrades
- Signage gantries
- Lattice towers
Why TIC Dubai
Mill-direct supply, GCC project expertise.
Global mill-direct sourcing
Direct relationships with primary mills in China, India, Türkiye, Korea, Japan, Vietnam, the GCC and Europe, with competitive ex-mill pricing and verified origin.
Certified to international standards
EN, ASTM, JIS, BS, GB and IS standards, supplied with mill test certificates, EN 10204 3.1 / 3.2 inspection on request.
Project-grade supply
Container, break-bulk and full project shipments, coordinated from origin port to UAE/GCC discharge or onward delivery.
Cut-to-length & fabrication ready
Standard mill lengths, custom cut-to-length, heat-numbered bundles and project-marked dispatch.
Fast indent turnaround
Stock-and-indent model: held stock for fast-moving sizes, mill rolling on programme for project tonnages.
Middle East market expertise
Five decades of experience supplying contractors, fabricators and EPC firms across the UAE, KSA, Qatar, Oman, Kuwait and Bahrain.
FAQ
Circular Hollow Sections (CHS): answered.
Common technical and procurement questions about circular hollow sections (chs), structured for engineers, architects and procurement teams.
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