
Perforation can be defined as the process of mechanically or manually stamping or punching metal sheets to create a pattern or sequence of holes. Depending on the demand, perforated metal sheets can be used as screens, filters, shields and guards to control the passage of water, air, solids, light, heat or sound. In the housing and construction industry, the perforated metal sheets are used to enhance the aesthetics of structures, such as facades, fixtures and panels, screening and fencing. Perforated metal sheets can be converted into different shapes, such as a square, circle, slot, hexagon and others. Perforated metal sheets are ideal for buildings that need adequate ventilation and airflow along with protection. Perforated metal sheets were initially developed for the mining industry and were used for filtering of coal. Perforated metal sheets provide skid resistance and ensure safety across slippery surfaces.