... or polished,beautiful,light,sound abatement,abrasion resisrance. Material: stainless steel perforated metal sheet, Carbon steel, Galvanized ... CNC Perforating Machine and Etch Tiny Machine Application: Perforated material is widely use as agriculture equipment, audio, automotive & ... need to konw the following parameters before we quote;∴ Material∴ Sheet thickness ∴ Hole shape∴ Diameter: the size ...