Perforated Metal Sheet

Production Process: Sheet leveling and cutting → CNC punching → Cutting and shaping → Deburring → Leveling → Surface anti-corrosion treatment (galvanizing, painting, electrostatic powder coating, polishing, etc.). The structure is robust, and the open area ratio can be customized. It offers multiple functions, including ventilation, airflow, noise reduction, screening, protection, and decoration. The material is resistant to deformation and corrosion, with a wide range of material options available. It is easy to cut, bend, weld, and install, resulting in low maintenance costs and high recyclability.

Core Advantages

Precise, Uniform Holes: CNC punching ensures minimal deviation in hole diameter and spacing, consistent open area ratios, and controllable screening/filtration accuracy;

Flat, Aesthetic Surface: Ideal for applications requiring high visual appeal, such as building facades, curtain walls, and suspended ceilings;

Flexible, Durable Material Selection: Rust-treated carbon steel offers excellent cost-performance; stainless steel provides acid/alkali resistance suitable for coastal or chemical environments; aluminum offers a lightweight, rust-proof solution;

Multifunctional Versatility: Suitable for mechanical protection and particle screening, as well as architectural applications like sound absorption, ventilation, and decorative elements.

1. Definition of Basic Parameters

Plate Thickness: Thickness of the raw material sheet

Hole Diameter: Diameter of an individual hole (round holes are most common; square, slotted, triangular, and custom shapes are also available)

Hole Pitch (Center-to-Center Distance): Distance between the centers of two adjacent holes

Margin: Distance from the center of the outermost hole to the edge of the sheet

Open Area Ratio: Total area of holes ÷ Total area of the sheet (determines ventilation and screening performance)

Standard Sheet Sizes: 1000×2000mm, 1220×2440mm, 1500×3000mm; custom cutting to any size is available

2. Common Hole Diameter Combinations (Round holes are the most versatile)

Decorative Perforated Mesh (Sheet thickness: 0.5–2.0mm; for decoration, suspended ceilings, ventilation)

φ1.5mm, φ2mm, φ3mm, φ4mm, φ5mm, φ6mm

Corresponding Pitch: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm

General-Purpose Protective/Screening Perforated Mesh (Sheet thickness: 2.0–4.0mm; for equipment guards, screening, fencing)

φ8mm, φ10mm, φ12mm, φ15mm, φ16mm, φ20mm

Corresponding Pitch: 12mm, 15mm, 18mm, 20mm, 25mm, 30mm

Heavy-Duty Load-Bearing Perforated Plate (Sheet thickness: 5–12mm; for trench covers, platform treads, heavy-duty screen plates)

φ25mm, φ30mm, φ35mm, φ40mm, φ50mm

Corresponding Pitch: 35mm, 40mm, 50mm, 60mm, 70mm

3. Hole Shape Classification

Round Hole: Highest sales volume; versatile choice for ventilation and screening;

Slotted Hole (Elongated Hole): Anti-slip treads, drainage/dewatering, linear screening;

Square Hole: Wear-resistant screening, mechanical filtration;

Triangular Hole / Plum-blossom holes: Designed for anti-slip applications and safety treads;

Custom shaped holes: For decorative designs and artistic curtain walls.

4. Common Materials

Q235 Low-carbon steel: Best cost-performance ratio; options include hot-dip galvanizing, electro-galvanizing, or painting for corrosion protection; the top choice for general outdoor protective applications;

304 Stainless steel: Rust-resistant and resistant to acids and alkalis; commonly used in food processing, chemical industries, and humid coastal environments;

316 Stainless steel: Resistant to seawater corrosion; specialized for marine engineering and highly corrosive operating environments;

Aluminum alloy: Lightweight and oxidation-resistant; a mainstream material for building facades and decorative curtain walls;

Cold-rolled / Hot-rolled steel: Selected based on requirements; hot-rolled steel is typically used for thicker plates.

5. Surface Treatment Methods

Hot-dip galvanizing (HDG): Long-lasting outdoor rust protection; offers the highest level of corrosion resistance;

Electro-galvanizing: Lower cost; suitable for mild indoor rust protection;

Painting / Powder coating: Customizable colors; provides aesthetic appeal and rust protection;

Polishing / Brushed finish: Specialized for stainless steel decoration; enhances visual texture;

Oil coating: Rust protection for short-term storage.