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Aluminum Perforated Sheet

Precision Aluminum Perforated Sheets for Architectural and Industrial Applications

 

Aluminum perforated sheets provide strength, weight reduction, light diffusion, and air ventilation. Manufactured from premium wrought aluminum alloys including 3003, 5052, and 6061, these sheets are processed via multi-ram CNC punching presses and laser cutting centers.

 

Whether specified for exterior building facades, sound attenuation panels, or industrial filtration systems, precise perforation geometry and stress-relief leveling ensure flat tolerances ready for immediate installation or secondary fabrication.

 

 
 
Product Categories
 
 
 

Round Hole Perforated Sheets:

 

The industry standard for structural efficiency. Available in 60 deg staggered, 45 deg staggered, or straight-line patterns. Open area ranges from 10% to 68%.

 
 

Square and Rectangular Hole Sheets:

 

Preferred for high ventilation requirements, HVAC grilles, and modern interior partitioning. Offers clear line-of-sight and maximum airflow.

 
 

Slotted and Oblong Hole Sheets:

 

Engineered for liquid filtration, grain sorting, and drainage covers where directional flow control is critical.

 
 

Decorative and Architectural Pattern Sheets:

Hexagonal, diamond, and complex custom geometric punch patterns designed for building envelopes, sunshades, and acoustic ceilings.

 

 

Materials and Specifications

 

 

Parameter

Standard Range

Custom Capability

Aluminum Alloys

AA 1050, 1100, 3003, 5052, 6061

AA 5083, 7075 (on request)

Temper

O, H12, H14, H32, T4, T6

Custom heat treatment

Sheet Thickness

0.5 mm - 6.0 mm (0.020 inch - 0.236 inch)

Up to 10.0 mm heavy plate punching

Hole Diameter / Size

0.8 mm - 100 mm

Custom die tool fabrication

Open Area Percentage

8% - 72%

Calculated per CAD drawing

Standard Panel Sizes

1000x2000 mm, 1220x2440 mm (4ft x 8ft), 1500x3000 mm

Up to 2000x6000 mm CNC bed size

Dimensional Tolerance

ISO 2768-m / EN 22768-m

Diagonal tolerance <= 1.5 mm

Surface Finish

Mill Finish, Anodized (10-25 um), PVDF Coating, Powder Coating (RAL colors)

Chromate Conversion, Electrophoresis

 

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Applications

Architectural Facades and Sunscreens: PVDF-coated 3003-H14 and 5052-H32 panels reduce solar heat gain while providing ventilation and dynamic building aesthetics.

 

Acoustic Ceiling and Wall Panels: Micro-perforated panels (hole diameter 0.8 mm - 1.5 mm) paired with acoustic non-woven fleece achieve sound absorption coefficients (NRC) up to 0.85.

 

Industrial Equipment Guards and Enclosures: High-rigidity 6061-T6 perforated plates protect heavy equipment and power generators without restricting heat dissipation.

 

HVAC Grilles and Filtration: Slotted and round perforation patterns function as air diffusers, intake screens, and liquid-solid separation strainers.

 

OEM and Customization Services
 

Custom Margin Design:

Unpunched margins (blank edges) supplied to specific widths on all four sides for immediate welding, framing, or bending.

CNC Punching and Laser Cutting:

Complex perimeter notches, mounting bolt holes, and irregular cutouts executed prior to finishing.

Forming and Bending:

CNC press brakes produce precise Z-profiles, L-angles, cassettes, and flanged edges without cracking perforation lines.

Surface Treatment:

In-house automatic electrostatic powder coating lines and PVDF spraying (AkzoNobel / PPG certified) ensure 20-year outdoor color stability.

 

 

Quality Control and Manufacturing Standards

Roller Leveling and Stress Relief: High-precision hydraulic roller levelers remove internal material tension caused by punching, guaranteeing sheet flatness within 2 mm per meter.

 

Deburring and Edge Cleaning: Mechanical deburring brushes remove burrs from both sides to ensure smooth hole edges and proper coating adhesion.

 

Dimension and Open Area Verification: Optical measurement systems confirm hole diameter, center-to-center pitch, and edge margin dimensions against CAD specs.

 

Coating Thickness and Adhesion Test: Elcometer gauge checks coating depth (PVDF >= 30 um; Powder Coating >= 60 um), followed by cross-hatch tape adhesion testing according to ASTM D3359.

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Packaging and Logistics
Interleaving and Surface Protection:

 

PE protective film applied to painted/anodized surfaces; neutral tissue paper interleaving between mill-finish sheets.
VCI Moisture Barrier:

 

Waterproof kraft paper and VCI anti-rust film fully wrap each bundle to prevent atmospheric oxidation in humid shipping containers.
Heavy-Duty Wooden Crate Export Packaging:
Fumigated ISPM-15 compliant wooden crates reinforced with steel strapping and corner protectors. Max bundle weight structured for forklift handling.

 

 

FAQ

 

 

Q: How do I calculate the open area percentage for round staggered perforations?

A: For a 60 deg staggered round hole pattern, the formula is: Open Area (%) = (D^2 / U^2) x 90.69, where D is the hole diameter and U is the hole center-to-center pitch. Our engineering team provides exact open area calculations for custom CAD layouts upon request.

Q: Can you perforate aluminum sheets with margin edges on all four sides?

A: Yes. We program CNC punching presses to leave custom unpunched margins (e.g., 20 mm or 50 mm solid borders) along panel edges to facilitate structural welding, riveting, or framing.

Q: How do you prevent aluminum sheets from warping during the punching process?

A: Punching thousands of holes releases residual stress in sheet metal, causing oil-canning or bowing. We run all perforated panels through a multi-roll precision hydraulic leveling machine after punching to restore flat tolerances before surface treatment.

Q: What is the minimum hole diameter relative to sheet thickness?

A: To prevent punch pin breakage, the minimum hole diameter should be equal to or greater than the aluminum sheet thickness (D >= T). For example, on a 2.0 mm thick 5052 aluminum sheet, the recommended minimum hole diameter is 2.0 mm.

Q: What surface finish is recommended for outdoor architectural cladding?

A: A 2-coat or 3-coat PVDF (Fluoropolymer) coating conforming to AAMA 2605 standards is recommended for exterior applications. It offers resistance to UV degradation, salt spray corrosion, and chemical exposure for over 15-20 years.

Q: What is your standard Minimum Order Quantity (MOQ) and lead time?

A: For standard stock sizes (e.g., 4ft x 8ft in 3003-H14), the MOQ is 50 sheets. For custom perforation patterns or specific PVDF colors, the MOQ is 200 sq.m. Standard lead time is 12-18 business days from final shop drawing approval.

We're well-known as one of the leading aluminum perforated sheet manufacturers and suppliers in China, also support custom service. Please feel free to wholesale high quality aluminum perforated sheet made in China here from our factory. For more information, contact us now.

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