Perforated mild steel sheet from Rackerman, available in 30 round-hole patterns from R0.8/T1.5 to R20/T27, in thicknesses of 0.5mm, 1mm, 1.5mm, 2mm, 3mm and 5mm, and sheet sizes of 2 x 1m and 2.5 x 1.25m. This is the most versatile and cost-effective perforated metal sheet for fabrication, guarding and architectural work. Select your exact hole pattern, sheet size and thickness from the options above – every combination is a stocked specification supplied across the UK, cut to size on request.
Why choose perforated mild steel sheet?
Perforated mild steel combines strength with open area for airflow, light, drainage and visual effect, which is why perforated steel sheet is one of the most widely specified perforated metal panels in the trade. It is used for ventilation grilles, machine and plant guards, screens and sieves, balustrade and balcony infill panels, acoustic screening, vehicle and trailer panels, agricultural screens, sign blanks and decorative facade cladding. Smaller holes such as R0.8/T1.5 give a finer, more solid appearance with higher strength; larger holes such as R20/T27 give a greater open area for maximum airflow and through-vision.
Hole patterns available
All patterns are round-hole on a staggered 60° triangular layout, the UK industry standard. The pattern code reads as R (hole diameter) / T (pitch, centre-to-centre spacing).
| Pattern | Hole | Pitch |
|---|---|---|
| R0.8/T1.5 | 0.8mm | 1.5mm |
| R1/T2 | 1mm | 2mm |
| R1.2/T2.25 | 1.2mm | 2.25mm |
| R1.5/T2.75 | 1.5mm | 2.75mm |
| R2/T3 | 2mm | 3mm |
| R2/T3.5 | 2mm | 3.5mm |
| R2/T4 | 2mm | 4mm |
| R2.5/T3.5 | 2.5mm | 3.5mm |
| R3/T4 | 3mm | 4mm |
| R3/T5 | 3mm | 5mm |
| R4/T5 | 4mm | 5mm |
| R4/T6 | 4mm | 6mm |
| R4/T7 | 4mm | 7mm |
| R5/T6 | 5mm | 6mm |
| R5/T7 | 5mm | 7mm |
| R5/T8 | 5mm | 8mm |
| R6/T8 | 6mm | 8mm |
| R6/T8.5 | 6mm | 8.5mm |
| R6/T9 | 6mm | 9mm |
| R6/T10 | 6mm | 10mm |
| R6/T12 | 6mm | 12mm |
| R8/T11 | 8mm | 11mm |
| R8/T12 | 8mm | 12mm |
| R10/T13 | 10mm | 13mm |
| R10/T15 | 10mm | 15mm |
| R10/T18 | 10mm | 18mm |
| R12/T13 | 12mm | 13mm |
| R12/T17 | 12mm | 17mm |
| R15/T21 | 15mm | 21mm |
| R20/T27 | 20mm | 27mm |
Material grade & specification
Manufactured from commercial-quality mild steel – cold-reduced CR4 to BS EN 10130 (DC01) in the lighter gauges, and hot-rolled mild steel to BS EN 10025 (S235JR) in the heavier 3mm and 5mm gauges. Supplied mill finish (uncoated) and ready to paint, powder-coat or galvanise. For a certified material grade against a specific thickness, request a quote and we will confirm the exact material and provide certification before dispatch. Perforated mild steel sheet is supplied as a decorative and general-fabrication product and is not CE/UKCA-marked for load-bearing structural use.
Sizes, thickness & tolerances
Sheet sizes: 2 x 1m and 2.5 x 1.25m. Thicknesses: 0.5mm, 1mm, 1.5mm, 2mm, 3mm and 5mm. Heavier gauges give greater rigidity and load-bearing capacity; lighter gauges are easier to cut, form and handle for decorative screens. Material is produced to BS EN ISO 9001 tolerances. These are stock-size sheets – for bespoke cut-to-size pieces or trade quantities (5+ sheets) contact us for a project quote.
Delivery & offloading
Lead times are currently 3–5 working days. Perforated sheets are heavy, bulky items delivered on a pallet to mainland UK addresses. Please ensure suitable site access and someone available to assist with offloading. Free UK delivery is included.
Related perforated sheets
Not sure mild steel is right for the job? For outdoor and damp environments choose perforated galvanised steel sheet, or for lightweight panels choose perforated aluminium sheet. Browse the full perforated metal sheets range, or see expanded metal sheet for a diamond-mesh alternative.