Perforated metal, also called perforated sheet or porous plate, is created by punching hole patterns into metal sheets using CNC punching, laser cutting, or rotary punching technologies. It offers structural strength and permeability, making it useful in industrial screening, filtration, protection, and architectural decoration. It is customizable with various open area ratios, suitable for applications such as mining screens and architectural facades.

Common Materials

Low Carbon Steel: Used for heavy-duty screening in non-corrosive environments. Often treated with galvanizing or powder coating.
Stainless Steel: Grades 304, 316, and 316L provide resistance to corrosion, acids, alkalis, and temperature.
Aluminum: Lightweight and oxidation-resistant, used in architectural decoration and light equipment.
Galvanized Steel: Coated with zinc, offering strength and corrosion resistance for ventilation ducts and agriculture.
Specialty Alloys: Includes copper (decorative, conductive), nickel (corrosion resistance), and titanium (aerospace applications).

Hole Shapes and Specifications

Round Holes: Diameters range from 0.5 mm to 50 mm.
Square Holes: Sizes from 1 mm to 100 mm, for granular material screening.
Oblong Holes: Facilitate fluid flow with directional properties.
Hexagonal Holes: Honeycomb structure for stress distribution and aesthetics.
Decorative Holes: Includes diamond, triangular, and cross-shaped holes.
Louvre Holes: Angled perforations for rain protection and ventilation.
Fish Scale Holes: Raised texture for anti-slip properties.
Micro-perforations: Holes under 1 mm for filtration and sound attenuation.
Custom-shaped Holes: Custom designs for logos, text, or patterns.

Features

Strength & Lightweight: Ensures structural integrity while maintaining an open area ratio.
Permeability: Allows airflow, light transmission, and sound propagation while blocking particles.
Corrosion Resistance: Stainless steel and treated surfaces withstand exposure to outdoor conditions.
Ease of Processing & Installation: Can be bent, rolled, welded, and cut into different shapes.
Aesthetic Appeal: Provides modern effects with light and shadow, used in facades and interiors.
Anti-slip & Noise Reduction: Certain hole patterns provide anti-slip functionality, while micro-perforations absorb sound.

Application Areas

Industrial Screening & Filtration: Used in mining, coal, petroleum, and chemical industries for screens and filtration.
Architectural Decoration: Applied in facades, curtain walls, ceilings, and partitions.