Copper Perforated Sheet — Manufacturing Capability & Range
Copper doesn’t usually get the spotlight the way stainless or aluminium does, but once you’ve worked with a copper perforated sheet the warm colour, the way it ages into that soft patina, the conductivity it’s obvious why architects and fabricators keep coming back to it. Kalpataru Piping manufactures and supplies copper perforated sheet as part of our wider copper products range, in round, square, oblong, and slotted hole patterns, punched conventionally or by CNC depending on the tolerance the job needs. Standard sheet runs up to 2000 x 6000mm with fine-hole punching from 0.4mm and drilling up to 100mm on heavier stock, but if your pattern doesn’t match anything standard, we can fabricate a custom hole layout rather than force you into a catalog size. It’s used across everything from architectural cladding and acoustic panels to filtration and electrical screening copper’s antimicrobial and conductive properties make it a genuinely different material to work with than perforated steel. Send us your hole pattern, thickness, and size and we’ll get back with a real quote and lead time.
What Is Copper Perforated Sheet?
A perforated sheet is exactly what it sounds like flat stock with a repeating pattern of holes, slots, or shapes stamped, punched, or drilled through it. With copper specifically, that base material brings a few things steel and stainless can’t: genuinely high thermal and electrical conductivity, a naturally antimicrobial surface, and a look that develops character over time as the exposed copper oxidises into a thin green-brown patina rather than rusting. Left mill-finished, it starts a warm reddish-gold and ages gradually; polished, it holds a brighter shine longer before the same process takes over. Neither is a flaw. A lot of architectural applications specify copper precisely because that aging process is part of the design.
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Copper vs Brass Perforated Sheet
These two get compared a lot, since they’re both copper-based and often used interchangeably on decorative work:
| Parameter | Copper Perforated Sheet | Brass Perforated Sheet |
| Composition | Pure copper (or copper alloy with minor additions) | Copper-zinc alloy |
| Conductivity | Higher thermal and electrical conductivity | Lower than pure copper |
| Colour / Finish | Warm red-gold, ages to green-brown patina | Bright yellow-gold, ages more slowly |
| Typical Use | Electrical screening, filtration, architectural cladding | Decorative panels, hardware, musical instruments |
| Cost | Generally higher | Generally lower |
Copper Perforated Sheet Technical Specification
|
Parameter |
Details |
|
Material |
Copper (C10100 / C10200 / C11000 / C12200 and equivalent grades on request) |
|
Hole Type |
Round, Square, Oblong, Rectangular, Capsule, Hexagonal, Dimpled, Lipped |
|
Sheet Size |
Up to 2000mm x 6000mm |
|
Thickness |
0.4mm through 10mm, heavier stock on request |
|
Fine Hole Punching |
0.4mm to 2mm diameter |
|
Drilling (Heavy Thickness) |
10mm to 100mm diameter |
|
Punching Type |
Conventional and CNC punching |
|
Surface Finish |
Mill finish, polished (brilliant or dull), brushed |
|
Custom Fabrication |
Available for non-standard hole patterns and sizes |
|
Packaging |
Wooden boxes, export-grade for worldwide shipment |
|
Documentation |
Test certificates and third-party inspection on request |
Sheet Thickness & Hole Size Reference
A rough guide to matching thickness and hole size to the application:
|
Application |
Typical Thickness |
Typical Hole Size |
|
Acoustic panels / sound control |
0.5mm – 1.5mm |
1mm – 5mm |
|
Architectural cladding / screens |
1mm – 3mm |
5mm – 20mm |
|
Filtration / sieving |
0.4mm – 2mm |
0.4mm – 5mm |
|
Electrical / RF screening |
0.5mm – 2mm |
1mm – 10mm |
|
Heavy-duty guards / grilles |
3mm – 10mm |
10mm – 100mm |
Hole Patterns & Shapes Available
We manufacture and stock copper perforated sheet in the following configurations:
- Round hole (straight or staggered pattern)
- Square hole
- Slotted / oblong hole
- Rectangular hole
- Hexagonal hole
- Capsule hole
- Dimpled and lipped hole finishes
- Custom hole patterns to your drawing
Perforated Sheet Applications
Where copper perforated sheet actually gets used:
- Electrical panels and RF/EMI shielding
- Architectural facades, cladding, and sunshades
- Acoustic and sound-control panels
- Filtration and sieving for seed, stone, and bulk materials
- Ventilation grilles and air-conditioning screens
- Decorative balustrades, ceiling panels, and gaskets
- Antimicrobial surfaces in healthcare and food environments
If your project needs solid copper stock alongside perforated sheet — for flashing, trim, or transitions — our copper plates and sheets range covers that, and copper fasteners are available for the installation hardware.
Marking, Packing & Quality Assurance
Every sheet is inspected at each stage of production, not just at final dispatch, so a quality issue gets caught before it’s baked into the finished product. Packing is done carefully in wooden boxes to prevent damage in transit — dents and scratches on a decorative material are a lot more visible than on structural stock, so we treat the packaging step accordingly. Test certificates are available for every order, and third-party inspection can be arranged if your project specification calls for it. If you want more background on copper as a material or on perforated sheet applications generally, our copper products guide and perforated sheet applications guide
Certifications & Documentation
- ISO 9001:2015 Quality Management Certification
- Test certificates supplied on every order
- Third-party inspection available on request
- Full material traceability from mill source
You can see the rest of what we stock in our full catalog.
FAQ’s About Copper Perforated Sheet
What are the uses of perforated sheets?
Perforated sheets are widely used for filtration, screening, ventilation, acoustic panels, machine guards, partitions, ceilings, and architectural applications. They are available in different materials, hole sizes, and patterns.
What is the thickness of a perforated sheet?
Perforated sheets are commonly available in thicknesses from 0.5 mm to 12 mm, depending on the material and application. Custom thicknesses can also be supplied as per requirements.
What are the standard sizes of perforated sheets?
Common sizes include 1000 × 2000 mm, 1220 × 2440 mm, 1250 × 2500 mm, and 1500 × 3000 mm. Custom sizes can be manufactured according to project requirements.
What is the weight of perforated sheets?
The weight depends on the material, thickness, dimensions, hole diameter, pitch, and open area. Perforated sheets generally weigh less than solid sheets of the same size and thickness.
What is the difference between perforated and non-perforated sheets?
Perforated sheets contain regularly spaced holes that allow air, light, liquids, or sound to pass through. Non-perforated sheets have a solid surface and provide continuous coverage and containment.
