Buy Circular Hollow Sections (CHS) Online
Custom-cut to Order –
Delivery or Click & Collect
CHS Steel – Circular Hollow Sections
At Edcon Steel, we stock a comprehensive range of circular hollow sections (CHS) to suit trade professionals and DIY fabricators alike. Our CHS sections are high-quality structural steel (typically 350 MPa yield strength for structural grades), and we offer options in mild steel, pre-galvanised steel, and even stainless steel for specialised projects. All our CHS products meet Australian Standards (e.g. AS/NZS 1163 for structural hollow sections) and can be supplied with material certification on request.
Circular Hollow Sections (CHS) are round structural steel tubes known for their clean look, versatility, and strength. With a smooth circular profile and no sharp corners, CHS is easier to handle and often more visually appealing than angled sections. Structurally, the round shape has no weak axis as strength is balanced in all directions, giving CHS excellent performance under bending and torsional loads. These qualities make CHS a popular choice for architects and engineers who need both form and function in structural members. It’s commonly used for columns, posts, braces, and any application where uniform geometry and high torsional rigidity are valuable.
Order online for nationwide delivery, or visit one of our NSW stores in Brookvale, Revesby, Blacktown, Bathurst, and Orange for expert advice and local pick-up.
Explore the product groups below to find the right structural steel solution for your next project.
Ready to order CHS Steel? Order online here today.
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Key Specs & Options: Circular Hollow Sections (CHS)
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Specification |
Details |
| Outer Diameter | ~20 mm (smallest) up to ~300+ mm (largest) outside diameter.* Standard stocked range covers common pipe sizes and structural tube diameters. |
| Wall Thickness / Mass | ~1.6 mm thin-wall tubing up to ~12 mm heavy-wall sections. Weight per metre ranges from ~2 kg/m for small CHS up to ~40+ kg/m for the largest sections, depending on size and wall thickness.* |
| Material Grades | Structural Mild Steel – typically Grade C350L0 (350 MPa) for most CHS. High-tensile C450L0 for some pre-galvanised sections. Stainless Steel (304/316 grades) available on request for special application. |
| Standard Lengths | Common stock lengths ~6.5 m and 8.0 m for most CHS. Some larger diameters available in 9.0 m or 12.0 m lengths. We can custom cut to any length you need. (Buying full lengths is often more economical for big projects.) |
| Finish / Coatings | Mill finish (black): raw mild steel with mill scale (uncoated). Primed (painted): shop primer coat for temporary corrosion protection and ready-to-paint surface. Pre-Galvanised: factory zinc-coated (inside and out) for a smooth, protective finish. Hot-Dip Galvanised (HDG): fully dipped after fabrication for heavy-duty rust protection. |
| Standards | Manufactured to AS/NZS 1163 (structural CHS specifications) and AS 1074 (for nominal bore pipes). All Edcon CHS products meet Australian standards and can be supplied with test certificates if required. |
(Values are typical for in-stock sections; other sizes may be available on request.)
Cut to Size. Packed. Delivered.
- We can custom cut lengths to the millimetre – with a minimum cut of just 15 mm.
- Cut-to-size items are available in-store while you wait, and online orders are typically processed the same day or the next day.
- Shorter cuts are cheaper to ship and sent via couriers or Australia Post.
- Large or long orders are delivered by our own delivery truck fleet in NSW or by national freight partners.
Work Smarter with Edcon Steel
Handling & Storage: Store CHS securely to prevent rolling and keep lengths off the ground to avoid moisture pooling and causing rust on bare steel.
Selecting Size & Thickness: Select your CHS size and thickness based on structural needs. Thicker-wall CHS offers higher load capacity and is better for heavy structural posts or beams, while thinner-wall CHS is fine for lighter applications and easier to cut or weld.
Custom Fabrication: Save time on-site by ordering CHS fabricated by our expert team. We can prepare your steel to spec, so it’s ready to install, no extra drilling or welding needed on your end.
Cut & Handle Safely: Always wear appropriate PPE when cutting or grinding steel. After cutting CHS, be sure to de-burr any sharp edges for a safe, clean finish. If you don’t have the right tools, let us do the cutting for you; we’ll deliver your CHS in ready-to-use lengths with clean cuts.
Check with a Professional: Our advice is general in nature. Always confirm your specific steel sizes, load-bearing requirements and compliance needs with a qualified engineer or builder, especially for structural applications. This ensures your project is safe and meets all regulations before you build.
Common Uses and Sectors: Steel Circular Hollow Section (CHS)
CHS steel is used across a broad range of industries, from residential building projects to heavy infrastructure. In construction, circular hollow sections serve as structural columns, beams, and bracing in homes, commercial buildings and industrial facilities. Their high strength-to-weight ratio means CHS can support heavy loads (for example in roof structures or mezzanine floors) without excessive bulk.
The smooth, rounded appearance also lends itself to architectural applications like exposed structural features, curved roof trusses, or aesthetic pipework in modern designs.
In the infrastructure and civil works sector, CHS is found in bridge trusses, highway guardrails, sign posts, light poles, and as formwork or scaffolding components. Residential and rural uses are common too (think fence posts, gate frames, carport structures, pergolas, and even furniture or artistic sculptures).
In the transport industry, CHS appears in trailer frames, truck roll-bars, railings, and marine constructions, where a combination of strength and smooth form is desired. In short, anywhere a tough, tubular steel section is needed, be it a high-rise building or a farm fence, CHS is often the go-to solution.
Edcon Steel supplies CHS across Australia through our Brookvale, Revesby, Blacktown, Bathurst, and Orange stores, with Australia-wide delivery also available.
For more information, read our Steel and Metal articles. Additionally, the OneSteel guide for builders and owner-builders provides support in the design, sizing, and applications of structural steel products for domestic and house building.
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Read MoreFrequently Asked Questions
Can I get CHS cut to size at your stores?
Yes. All Edcon Steel locations (Brookvale, Revesby, Blacktown, Bathurst, and Orange) and our online store offer custom cut-to-size services.
Do you deliver CHS outside of Sydney and NSW?
Yes, we offer Australia-wide delivery on all CHS products, with fast dispatch from our NSW stores in Brookvale, Revesby, Blacktown, Bathurst, and Orange. Our Edcon Steel trucks deliver daily to sites across Sydney and Central Western NSW (including Bathurst and Orange). For areas outside our truck network, we partner with reliable national freight providers to get your order to you safely and efficiently. Because CHS can be long and heavy, freight charges can vary.
Can I collect my CHS from a local store?
Absolutely. You can use our free Click & Collect service from any Edcon Steel store in Brookvale, Revesby, Blacktown, Bathurst, and Orange. Place your order online and we’ll notify you when it’s ready for pickup.
Where can I buy CHS in Sydney?
Edcon Steel has stores in Brookvale, Revesby, and Blacktown. You can also order online 24/7 for delivery across Sydney and NSW. Our team can help you choose the right CHS for your project.
Do the Orange and Bathurst stores stock CHS?
Yes. Our regional NSW stores in Bathurst and Orange stock a wide range of CHS. If a specific size isn’t in stock, we can quickly transfer it from another branch or arrange delivery from our central warehouse.
How much does steel CHS cost?
Prices vary based on size, material grade and finish. You can view live pricing and stock availability on our website or request a quote from your nearest store. We sell by the length you need, so you only pay for what you use.
Does Edcon Steel offer structural steel fabrication?
Edcon provides complete in-house fabrication services, completed to AS 4100 and AS/NZS 5131 standards. Our qualified team can fabricate from your drawings or assist with detailing, supplying fully prepped steel that’s ready for installation on residential, commercial, or industrial projects. Whether it’s a one-off custom job or a repeat order, we deliver quality, compliant results tailored to your needs.
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