Processed Metal Perforated Stainless Steel Galvanized Iron Sheets for Industrial Use. Uniform perforation provides excellent ventilation, light transmission, and noise reduction effects. Various materials can be selected: carbon steel, galvanized, 304 stainless steel, 316 stainless steel, copper, aluminum, etc., with a long service life. Aperture, thickness, size, and hole shape can be customized. Overall stamping structure, strong impact resistance. Easy to cut, bend, install, clean, and maintain at a low cost.