Perforated
Metal Sheet
Round, slot, square and decorative pattern perforations in Aluminium, Galvabond, Mild Steel, Stainless Steel and Zinc Anneal. Stocked profiles available nationally. Custom profiles made to size and specification. Ideal for architectural facades, acoustic panels, industrial screening, ventilation grilles and decorative applications.
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E-E-A-T Technical Reference
Perforated Metal Specifications
Material grades, open area calculation, thickness ranges, sheet sizes and applicable standards for perforated metal products.
Material Specifications
| Code | Material | Grade / Standard | Thickness Range | Sheet Sizes | Typical Applications |
|---|---|---|---|---|---|
| AL | Aluminium | 3003-H14 / 5005-H34 (AS/NZS 1734) | 0.55–3.00 mm | 2400×1200 mm std; custom available | Architectural facades, decorative panels, coastal environments |
| GB | Galvabond | G300 zinc-coated steel (AS 1397) | 0.55–3.00 mm | 2400×1200 mm std; custom available | General industrial, ventilation, light structural |
| MS | Mild Steel | Grade 250 / 350 (AS/NZS 3678) | 0.55–6.00 mm | 2400×1200 mm std; custom available | Heavy industrial, flooring, structural screens, non-slip |
| SS | Stainless Steel | 304 / 316 (ASTM A240) | 0.55–3.00 mm | 2400×1200 mm std; custom available | Food processing, marine, chemical, prestige architectural |
| ZA | Zinc Anneal | Zinc-annealed steel (AS 1397) | 0.55–1.60 mm | 2400×1200 mm std; custom available | Acoustic panels, fine filtration, decorative screens |
Open Area (OA)
Percentage of sheet that is open (perforated)
Higher OA = more airflow, less material, lighter weight. Lower OA = more privacy, more strength, less light transmission. OA is determined by hole size and pitch.
Pitch
Centre-to-centre hole spacing
Measured from the centre of one hole to the centre of the adjacent hole. Staggered (60°) pitch is most common for round holes; square pitch also available.
Stocked Profile
Available from national stock
Stocked profiles are available in standard sheet sizes (typically 2400×1200 mm) from national warehouses. Lead times are typically 1–3 business days.
Custom Profile
Made to order
Custom profiles are perforated to your specification — hole size, pitch, material, thickness and sheet size. Minimum quantities apply. Lead times vary by profile and material.
Acoustic Perforation
Fine holes for sound absorption
Small diameter holes (2–4 mm) with low OA (7–15%) are used as acoustic facing panels over acoustic insulation. The perforation allows sound to pass through to the absorptive layer.
Capability Limitations
Material/thickness constraints
Some profiles have capability limitations — minimum material thickness, maximum sheet size, or restricted material availability. Refer to profile notes or enquire for confirmation.
Applicable Standards
AS/NZS 1734
Aluminium and aluminium alloys — Flat sheet, coiled sheet and strip
Covers aluminium alloy sheet and coil used as substrate for perforated aluminium products.
AS 1397
Continuous hot-dip metallic coated steel sheet and strip
Covers Galvabond (zinc-coated) and zinc-anneal steel substrates used in perforated products.
AS/NZS 3678
Structural steel — Hot-rolled bars and sections
Covers mild steel plate and sheet grades used as substrate for perforated mild steel products.
ASTM A240
Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip
Covers stainless steel 304 and 316 sheet used as substrate for perforated stainless products.
ISO 4020
Perforated metal sheets — Staggered round holes
International standard for staggered round hole perforated metal — hole diameter, pitch and open area tolerances.
ISO 4021
Perforated metal sheets — Square holes
International standard for square hole perforated metal — hole size, pitch and open area tolerances.
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Custom hole sizes, pitches, materials and sheet dimensions available. Add profiles to your enquiry above or contact us directly with your specifications.