Structural Products
Reinforcing Steel
& Mesh
Australia's premier supplier of deformed rebar (N6–N40), reinforcing mesh (SL62–SL102), trench mesh, galvanised rebar and a complete range of reinforcing accessories. Custom cutting, bending and prefabrication available.
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Standard reinforcing mesh sheets for concrete slabs, footpaths, driveways and structural applications. Available in a convenient 4 x 2m size that fits in a Ute.
| Code | Description | Lengths | Actions |
|---|---|---|---|
| SL62 | Square mesh — 6.0mm wire @ 200mm centres4.0 x 2.0m | Coil / 6m | |
| SL72 | Square mesh — 7.0mm wire @ 200mm centres4.0 x 2.0m | Coil / 6m | |
| SL82 | Square mesh — 8.0mm wire @ 200mm centres4.0 x 2.0m | Coil / 6m | |
| SL92 | Square mesh — 9.0mm wire @ 200mm centres4.0 x 2.0m | Coil / 6m | |
| SL102 | Square mesh — 10.0mm wire @ 200mm centres4.0 x 2.0m | Coil / 6m |
Trench mesh is designed for strip footings, beams and retaining walls. Available in 3-bar and 4-bar configurations in a range of widths.
| Code | Description | Lengths | Actions |
|---|---|---|---|
| L8TM3 | 3-bar trench mesh — 8.0mm wire6.0m lengths | Coil / 6m | |
| L11TM3 | 3-bar trench mesh — 11.0mm wire6.0m lengths | Coil / 6m | |
| L12TM3 | 3-bar trench mesh — 12.0mm wire6.0m lengths | Coil / 6m | |
| L8TM4 | 4-bar trench mesh — 8.0mm wire6.0m lengths | Coil / 6m | |
| L11TM4 | 4-bar trench mesh — 11.0mm wire6.0m lengths | Coil / 6m |
Technical Reference
Standards & Specifications
Applicable Australian Standards · Grade designations · Tolerance disclaimer
AS/NZS 4671:2019
Steel reinforcing materials
The primary Australian Standard for deformed and plain reinforcing bar and mesh. Specifies Grade 500N (500 MPa yield, normal ductility) and Grade 500E (500 MPa yield, seismic/earthquake ductility). All N-grade deformed bar supplied by Steel Source Australia conforms to AS/NZS 4671:2019 Grade 500N unless otherwise specified.
AS/NZS 4671:2019 — Mesh
Reinforcing mesh — SL and RL series
SL (square) and RL (rectangular) mesh is manufactured from Grade 500L wire (500 MPa yield, low ductility) welded at intersections. SL62 through SL102 designations indicate wire diameter: SL62 = 6.0mm wire, SL72 = 7.0mm, SL82 = 8.0mm, SL92 = 9.0mm, SL102 = 10.0mm. All at 200mm centres in both directions.
AS 3600:2018
Concrete structures
The Australian Standard for the design of concrete structures. Specifies minimum cover requirements, development lengths, lap splice lengths and bar spacing rules that govern how reinforcing steel is detailed and placed. Structural engineers reference AS 3600 when specifying bar sizes, grades and placement for footings, slabs, beams and columns.
NCC 2022 — Volume One
National Construction Code — Structural provisions
The NCC mandates compliance with AS 3600 for all Class 2–9 buildings. For Class 1 and 10 buildings (houses and sheds), AS 3600 is referenced by AS 3623 and AS 4055. Reinforcing steel used in NCC-regulated construction must be sourced from a manufacturer with a current product certification to AS/NZS 4671.
Grade Comparison — AS/NZS 4671:2019
| Grade | Yield Strength (MPa) | Ductility Class | Typical Use | Notes |
|---|---|---|---|---|
| 500N | 500 MPa min | Normal (N) | General construction — slabs, footings, columns, beams | Standard grade for most residential and commercial projects |
| 500E | 500 MPa min | Seismic (E) | Earthquake-resistant structures — columns, moment frames | Higher uniform elongation; required in high seismic zones (AS 1170.4) |
| 500L | 500 MPa min | Low (L) | Reinforcing mesh only — slabs, footpaths, driveways | Not suitable for bending or use as main bars in beams/columns |
Typical Applications by Element
Slabs on Ground
SL82 or SL92 mesh; N12 bar at 200mm centres for thickened edges; N16 for heavily loaded slabs
Strip Footings
L8TM3 or L11TM3 trench mesh; N12–N16 bottom bars; N10 ligatures at 200mm
Columns
N16–N32 main bars; N10–N12 ligatures at 200mm; 500E grade for seismic zones
Beams
N16–N32 main bars; N10–N12 stirrups; development length per AS 3600 Cl. 13.1
Retaining Walls
N12–N20 vertical bars; N10 horizontal bars; L11TM4 trench mesh for base
Driveways & Paths
SL72 or SL82 mesh; 65mm cover to top; control joints at 3–4m centres
Disclaimer: Nominal bar diameters, yield strengths and mesh wire spacings are subject to permissible manufacturing tolerances per AS/NZS 4671:2019. Actual yield and tensile strengths may exceed the specified minimums. Bar sizes, grades, cover depths and placement details must be specified by a qualified structural engineer in accordance with AS 3600:2018 and the NCC. Steel Source Australia supplies materials only and does not provide structural engineering advice. Independent engineering verification is required for all structural applications.
Industry Membership
Galvanizers Association of Australia
Steel Source Australia is a member of the Galvanizers Association of Australia (GAA) — the peak industry body for hot dip galvanizing in Australia since 1985. While standard black bar and mesh are the most common reinforcing steel products, galvanised reinforcing steel (to AS/NZS 4680) is specified for aggressive environments — coastal structures, marine infrastructure, bridge decks, and chemical plants — where superior long-term corrosion protection is required. GAA membership ensures our team can advise on the correct coating specification and expected service life for your application.
AS/NZS 4680
Hot-dip galvanised coatings on fabricated ferrous articles. The governing standard for galvanised reinforcing bar and mesh. Specifies minimum average coating thickness of 45 µm (local minimum 35 µm) and coating adhesion requirements.
Corrosion Protection in Aggressive Environments
Galvanised rebar is specified where chloride-induced corrosion risk is high — coastal zones, marine splash zones, bridge decks, and industrial structures. The zinc coating provides both barrier protection and cathodic protection to the underlying steel.
GAA Technical Guidance
GAA publishes design guides, durability calculators, and inspection resources used by structural engineers and specifiers across Australia. Visit gaa.com.au for technical publications and to find accredited galvanizers.
GAA is the authoritative source for hot dip galvanizing standards, design guidance, and accredited inspector programs in Australia. Visit gaa.com.au for technical publications, the online durability estimator, and to find accredited galvanizers near you.
Visit GAA →Supply Chain Integrity
ACRS-Certified Mill Supply
Steel Source Australia sources reinforcing steel — deformed bar, mesh, and processed products — from mills holding current ACRS (Australasian Certification Authority for Reinforcing and Structural Steels) product certification wherever possible. ACRS is Australasia's most rigorous independent, not-for-profit steel certifier, accredited by JAS-ANZ under ISO/IEC 17065. Specifying ACRS-certified steel is the most reliable way to confirm that the reinforcing steel delivered to your site is the steel you specified.
ACRS Product Certification Scheme — Covered Categories
Hover each chip to see the applicable standard. Source: steelcertification.com
Independent Verification
ACRS assessments are conducted exclusively by in-house qualified metallurgists and engineers — entirely independent of the steel industry, with no conflicts of interest. Certification decisions are made by an expert committee, not the mill.
Ongoing Testing
ACRS requires quarterly production data submissions and conducts random independent sampling and laboratory testing throughout the year. Annual site audits verify quality management systems. Certificates are valid for 12 months and are suspended or terminated for non-compliance.
End-to-End Traceability
All products from all mill locations are tracked from steelmaking through to delivery. The ACRS Traceability Certification Scheme extends this coverage to distributors and processors in the supply chain — so you can verify the chain of custody, not just the mill.
NCC & AS 3600 Compliance
The NCC 2022 requires reinforcing steel used in regulated construction to be sourced from a manufacturer with current product certification to AS/NZS 4671. ACRS certification is the recognised mechanism for demonstrating this compliance to engineers, certifiers and building surveyors.
The 8-Stage ACRS Certification Process
Quality Management System Validation
Independent Product Sampling & Testing
Statistical Analysis of Production Output
Product Identification Review
All Products, All Locations Assessed
Product Traceability Verification
12-Month Certificate Validity, Regularly Updated
Suspension or Termination for Non-Compliance
Verify ACRS Certification Before You Buy
Use the ACRS Cloud App or the public certificate search at steelcertification.com to confirm that any mill, processor or distributor holds a current, valid ACRS certificate before placing an order. Certificates can be searched by company name, location, or product type.
Why Steel Source Australia
Premier Reinforcement Suppliers
At Steel Source Australia we understand that every construction project may have specific needs that require tailored solutions. That is why we offer a cutting and bending service, as well as customised prefabrication options for footings, columns/cages, beams, and piles. Rest assured, our team is equipped to meet your unique requirements.
For the finest quality reinforcing steel in Australia look no further than Steel Source Australia. As a leading steel deformed bar supplier, we are dedicated to providing unmatched products and services. Reinforcement is a vital component in nearly every concrete construction project, and our expertise in supplying reinforcing steel and galvanised rebar sets us apart. In addition to our comprehensive selection of round and deformed reinforcement bars in various diameters and lengths, we also stock and supply galvanised reinforcing bars — providing an added layer of protection against damp conditions when necessary.
Steel Source Australia also offers a comprehensive selection of steel reinforcement mesh including SL62, SL72, SL82, SL92 & SL102. Our inventory includes square, rectangular, and trench mesh options, along with a convenient 4 x 2 metre square mesh size specifically designed to fit into a Ute for easy transportation.
We carry a full range of reinforcing accessories to complement our bar and mesh supplies: ligatures, tie wires, bar chairs, corner and starter bars, waffles, building film, and more — all available for prompt delivery with no minimum order requirements.
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No minimum orders. Fast dispatch. Custom cutting and bending available. Get in touch for a prompt quote.