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Perforated Galvanized Steel Sheet
Perforated Galvanized Steel Sheet
Perforated galvanized steel sheet is produced by punching holes into high-quality mild steel and then galvanizing the surface. It is resistant to rust and corrosion, strong, and durable. Compared to standard steel sheets, it provides better ventilation, light transmission, and is lighter in weight. It is commonly used in building decoration, fencing, ventilation, filtration, and noise reduction.
ZHAOJIAN offers a comprehensive range of products, including hole sizes from 2 mm to 20 mm, thicknesses from 0.5 mm to 3 mm, and standard sheet sizes of 1000×2000 mm and 1250×2500 mm. Custom sizes, hole shapes (round, square, slotted), and galvanizing methods (hot-dip or electro-galvanized) are also available. As a trusted supplier of metal materials, ZHAOJIAN is committed to meeting diverse application needs with reliable quality and service.
ZHAOJIAN offers a comprehensive range of products, including hole sizes from 2 mm to 20 mm, thicknesses from 0.5 mm to 3 mm, and standard sheet sizes of 1000×2000 mm and 1250×2500 mm. Custom sizes, hole shapes (round, square, slotted), and galvanizing methods (hot-dip or electro-galvanized) are also available. As a trusted supplier of metal materials, ZHAOJIAN is committed to meeting diverse application needs with reliable quality and service.
Product Specifications
| Dimension Name | Value |
| Thickness | 1.5 mm (±0.05 mm); other options available from 0.5 mm to 6.0 mm |
| Width | 1000 mm or 1250 mm; customizable up to 1500 mm |
| Length | 2000 mm or 2500 mm; customizable; coil form available |
| Hole Diameter | 2 mm – 20 mm (standard: 6 mm) |
| Hole Pitch (Center Distance) | 8 mm or 9 mm (typical for 6 mm holes) |
| Hole Pattern | 60° staggered (standard); straight row available on request |
| Open Area (%) | 30% – 70% (standard: 40%) |
| Steel Grade | Mild Steel – ASTM A36 / A1011; equivalent to SS400 / Q235B |
| Chemical Composition | C ≤ 0.26%, Mn ≤ 1.03%, P ≤ 0.04%, S ≤ 0.05%, Si ≤ 0.40%, Cu ≤ 0.20% |
| Tensile Strength | 400–550 MPa |
| Yield Strength | ≥ 250 MPa |
| Elongation | ≥ 20% |
| Density | 7.85 g/cm³ (0.284 lb/in³) |
| Galvanized Coating Type | Hot-dip galvanized (G60/G90) or electro-galvanized |
| Surface Finish | Bright / mill finish; smooth or slightly spangled |
| Edge Type | Mill edge or slit edge |
| Flatness Tolerance | ±12.7 mm within 1524 mm (±1/2″ within 60″) |
| Form of Supply | Sheet or coil |
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More Details
- Applications for perforated galvanized steel sheet
- Unique Manufacturing Features
- Advantages of Perforated Galvanised Steel Sheet
Applications for perforated galvanized steel sheet
- Architectural and decorative features: Commonly used in facades, sunscreens, privacy screens, column covers, and infill panels—providing ventilation, light transfer, and visual appeal while conserving energy.
- Fencing, guardrails, stair treads, risers, and outdoor furniture: Provides durable, slip-resistant surfaces for stairs, platforms, equipment screens, sports facilities, parks, and balconies.
- Ventilation grilles and mechanical enclosures:Enable airflow for HVAC systems, electrical cabinets, and engine covers while protecting contents.
- Filtration and screens: Serves in industrial filters, screens for liquid and gas separation, drainage covers, and material sorting in agriculture, mining, water treatment, and food processing.
- Acoustic panels and noise barriers: Used in ceilings, walls, tunnels, and highways to reduce noise and improve acoustics.
- Signage, partitions, and display fixtures: Utilized in retail, exhibitions, office interiors, and public spaces for both functionality and aesthetics.
Unique Manufacturing Features
- Precision Perforation
Unlike standard galvanised steel sheets, perforated versions are made using CNC punching, rotary press rollers, or laser cutting to produce consistent hole patterns. These can be round, square, slotted, hexagonal, or fully customizable based on project requirements.
- Pattern Engineering
The perforation layout can be adjusted to optimize functional performance (such as airflow, drainage, or acoustic control) or to suit architectural design, allowing dual-purpose use in both industrial and decorative environments.
- Post-Perforation Edge Finishing
After punching, the sheets go through deburring and surface treatments to ensure smooth edges and maintain zinc coating integrity, preventing premature corrosion at exposed hole edges.
Advantages of Perforated Galvanised Steel Sheet
- Ventilation + Protection in One
Offers simultaneous airflow, light passage, and protection, making it ideal for applications like machine guards, HVAC covers, sunshades, and acoustic panels—a capability plain sheets don’t provide.
- Lightweight but Load-Bearing
By removing part of the material, the sheet becomes lighter while maintaining a high strength-to-weight ratio, reducing structural load without sacrificing durability.
- Acoustic and Thermal Regulation
The perforated surface helps diffuse sound and regulate heat—commonly used in building facades, ceiling panels, and energy-efficient designs.
- Aesthetic and Functional Customisation
The decorative hole patterns enable use in modern architecture, interior design, and retail displays, offering both an industrial look and practical benefits.
- Eco-Friendly & Material Efficient
The perforation process reduces material usage and weight, lowering transport energy and environmental burden. Plus, it remains 100% recyclable.
