Welded Mesh
Panels & Rolls
Pre-galvanised welded mesh panels and rolls in standard, 358 high-security and custom configurations. Wire diameters from 2.5 mm to 5.6 mm, pitches from 12.7 mm to 200 mm. Available in pre-galvanised, Zincalume®, PVC-coated and black annealed finishes. Manufactured to AS/NZS 4534. Suitable for fencing, concrete reinforcement, security perimeters, mining ground support and industrial enclosures.
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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. For welded mesh, the galvanised coating is the primary defence against corrosion. GAA membership ensures our team stays current with coating standards, inspection requirements, and best practice for galvanised wire products in Australian conditions.
AS/NZS 4534
Zinc and zinc/aluminium-alloy coatings on steel wire. Defines coating mass classes for galvanised wire used in welded mesh panels.
AS/NZS 4680
Hot-dip galvanised coatings on fabricated ferrous articles. Applies to galvanised welded mesh frames and accessories.
AS 1650
Hot-dipped galvanised coatings on ferrous articles — the legacy standard still referenced for wire coating mass by wire diameter.
GAA Durability Resources
GAA's durability calculator and technical publications help engineers and specifiers select the correct coating class for their environment.
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, durability calculators, and to find accredited galvanizers near you.
Visit GAA →E-E-A-T Technical Reference
Welded Mesh Specifications
Wire grades, coating specifications, weld shear strength requirements, dimensional tolerances and applicable standards for welded wire mesh panels.
Wire & Coating Specifications
| Coating | Wire Base | Coating Process | Zinc Mass (min) | Standard | Typical Applications |
|---|---|---|---|---|---|
| GAL | Low-carbon steel wire | Hot-dip galvanised after drawing | 245 g/m² | AS/NZS 4534 / AS 1650 | General fencing, concrete reinforcement, industrial enclosures |
| ZAL | Low-carbon steel wire | Zincalume® (55% Al–Zn) coating | 150 g/m² (Al-Zn equiv.) | AS/NZS 4534 / AS 1397 | Coastal environments, corrosive industrial, high-security perimeters |
| BLK | Low-carbon steel wire | Black annealed (no metallic coating) | — | AS/NZS 4534 | Concrete reinforcement (embedded), temporary works, painted applications |
| PVC | Galvanised wire core | PVC extruded over galvanised wire | 245 g/m² (core) | AS/NZS 4534 / ISO 10244 | Schools, childcare, commercial security, architectural, coastal |
Weld Shear Strength
Force required to shear a weld intersection
Measured in MPa. Standard welded mesh requires a minimum weld shear strength of 275 MPa per AS/NZS 4534. High-security 358 mesh requires 413 MPa minimum. Higher weld shear = greater panel rigidity and resistance to deformation.
Line Wire (LW)
Longitudinal wires running along the panel length
Line wires run parallel to the long axis of the panel. Line wire diameter and pitch determine the structural strength of the mesh in the longitudinal direction. Specified as LW diameter × LW pitch.
Cross Wire (CW)
Transverse wires welded across the line wires
Cross wires run perpendicular to the line wires and are resistance-welded at each intersection. Cross wire diameter and pitch determine the aperture size and transverse strength of the mesh.
Aperture
Clear opening between wires
The clear opening between adjacent wires, measured from wire edge to wire edge. Aperture = pitch − wire diameter. For 358 mesh: 76.2 mm LW pitch − 4.0 mm wire = 72.2 mm LW aperture; 12.7 mm CW pitch − 4.0 mm wire = 8.7 mm CW aperture.
358 Security Mesh
3″×0.5″ aperture, 8 gauge wire
Named for its imperial dimensions: 3 inch (76.2 mm) line wire pitch, 0.5 inch (12.7 mm) cross wire pitch, 8 gauge (4.0 mm) wire. The tight aperture prevents finger and tool grip. Weld shear strength 413 MPa minimum per AS/NZS 4534.
Dimensional Tolerances
Per AS/NZS 4534 Table 3
Wire diameter: ±0.05 mm. Pitch: ±3 mm. Panel width: ±5 mm. Panel length: ±10 mm. Squareness: ≤5 mm diagonal difference. Weld shear strength tested per AS/NZS 4534 Clause 7.4.
Applicable Standards
AS/NZS 4534:2006
Zinc and zinc/aluminium-alloy coatings on steel wire
Primary standard for welded wire mesh in Australia and New Zealand. Covers wire coating mass, weld shear strength, dimensional tolerances and test methods.
AS 1650:1989
Hot-dipped galvanised coatings on ferrous articles
Covers zinc coating mass and adhesion requirements for hot-dip galvanised wire used as the base material for pre-galvanised welded mesh.
AS/NZS 4671:2019
Steel reinforcing materials
Covers welded mesh used as concrete reinforcement (SL and RL mesh). Specifies yield strength, ductility and weld shear strength for reinforcing mesh.
AS 1397:2021
Continuous hot-dip metallic coated steel sheet and strip
Covers Zincalume® (55% Al–Zn) coated steel wire used as the base material for ZAL-coated welded mesh products.
ISO 10244:2010
Wire products — Welded wire mesh — Tolerances
International standard for dimensional tolerances of welded wire mesh panels. Referenced for PVC-coated mesh products.
AS/NZS 1554.1:2014
Structural steel welding — Welding of steel structures
Referenced for structural welded mesh applications where mesh is used as a structural element rather than a reinforcing or fencing product.
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Need a Custom Mesh Spec?
Custom wire diameters, pitches, panel sizes, coatings and weld shear strengths available. Add products to your enquiry above or contact us with your specification.