Round
Circular holes. Pitch may be triangular (60°), diagonal (45°) or rectangular (90°).
Product family
Perforated Metal
Array Metal's perforated metal range includes round, oblong, square and hexagonal hole patterns. Explore the available patterns and compare hole dimensions, pitch and open area. For a quotation, provide your required pattern, material, sheet thickness, dimensions and quantity.
Patterns
Four hole shapes cover the listed range. Filter by shape, arrangement, hole size and open area. These are catalogue pattern references — not stocked SKUs, and not a promise that every combination of material and thickness is available.
| Ref | Layout | Hole diameter / size (mm) | Pitch (mm) | Open area (%) |
|---|---|---|---|---|
| T | Ø1.5 | T 3 | 22.7 | |
| T | Ø1.5 | T 3.5 | 16.7 | |
| T | Ø1.5 | T 4 | 12.8 | |
| T | Ø1.5 | T 4.5 | 10.1 | |
| T | Ø2 | T 3.5 | 29.6 | |
| T | Ø2 | T 4 | 22.7 | |
| T | Ø2 | T 4.5 | 17.9 | |
| T | Ø2 | T 5 | 14.5 | |
| T | Ø2.5 | T 4 | 35.4 | |
| T | Ø2.5 | T 4.5 | 28 | |
| T | Ø2.5 | T 5 | 22.7 | |
| T | Ø2.5 | T 5.5 | 18.7 | |
| T | Ø3 | T 4.5 | 40.3 | |
| T | Ø3 | T 5 | 32.6 | |
| T | Ø3 | T 5.5 | 27 | |
| T | Ø3 | T 5.9 | 23.4 | |
| T | Ø3 | T 6 | 22.7 | |
| T | Ø3 | T 8 | 12.8 | |
| T | Ø3.3 | T 4.9 | 41.1 | |
| T | Ø3.5 | T 5 | 44.4 | |
| T | Ø3.5 | T 5.5 | 36.7 | |
| T | Ø3.5 | T 6 | 30.9 | |
| T | Ø3.5 | T 8 | 17.4 | |
| T | Ø4 | T 5.5 | 48 |
144 patterns from our perforated metal catalogue. Calculator-only arrangements (C-T, CD-M) are not listed. A pattern reference names the geometry, not a finished sheet.
In use
Decorative and architectural work is made to drawing. The panel below is a fabricated world-map example, not a dimensional pattern record.
Decorative panel
Open area calculator
Use a listed pattern in the calculator, or enter a custom geometry. Review material, thickness and sheet size before adding the request to an enquiry.
Round holes
Square holes
Hexagon holes
R-T
Round holes, 60° triangular pitch
Open area—
Holes / m²—
Open Area = (R² / T²) × 90.69%Holes/m² = 1,154,700 / T²Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
R-M
Round holes, 45° diagonal pitch
Open area—
Holes / m²—
Open Area = (R² / M²) × 78.54%Holes/m² = 1,000,000 / M²Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
R-U
Round holes, 90° rectangular pitch
Open area—
Holes / m²—
Open Area = (R² / (U₁ × U₂)) × 78.54%Holes/m² = 1,000,000 / (U₁ × U₂)Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
LR-U
Oblong holes, rectangular pitch
Open area—
Holes / m²—
Open Area = (R × L − 0.215 × R²) × 100 / (U₁ × U₂)Holes/m² = 1,000,000 / (U₁ × U₂)Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
LR-Z×Z
Oblong holes, staggered pitch
Open area—
Holes / m²—
Open Area = (R × L − 0.215 × R²) × 100 / (Z₁ × Z₂)Holes/m² = 1,000,000 / (Z₁ × Z₂)Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
C-T
Square holes, 60° triangular pitch
Open area—
Holes / m²—
Open Area = (C² / T²) × 115.47%Holes/m² = 1,154,700 / T²Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
C-U
Square holes, 90° rectangular pitch
Open area—
Holes / m²—
Open Area = (C² / (U₁ × U₂)) × 100%Holes/m² = 1,000,000 / (U₁ × U₂)Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
CD-M
Square holes (diagonal), 45° pitch
Open area—
Holes / m²—
Open Area = (CD² / M²) × 100%Holes/m² = 1,000,000 / M²Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
H-T
Hexagon holes, 60° triangular pitch
Open area—
Holes / m²—
Open Area = (H² / T²) × 100%Holes/m² = 1,154,700 / T²Enter a valid hole and pitch to specify a sheet and add it to an enquiry.
Enquire
Select a listed pattern and enquire, or specify a custom geometry in the calculator. A pattern reference names the geometry, not a finished sheet. We assess what we can manufacture from your requirement.
What to include
- Pattern or geometry (reference such as R15T20, or hole size, pitch and arrangement)
- Material and grade
- Sheet thickness
- Overall sheet width and length
- Quantity
- Unperforated margins
- Hole orientation on the sheet
- Finish
- Any fabrication (forming, framing, cut-outs)
The calculator collects pattern, material, thickness, sheet size and quantity into the enquiry list. The form accepts image attachments. Email PDF or CAD files to arrayinfo@arraymetal.com.