perforated metal sheet shapes: rectangular, square, circular, angular, scale-shaped Opening Dia. : 0. 3-100mm Thinkness :0. perforated metal sheet: ... steel plate, zinc plate, aluminum molded plate etc.Opening shapes: rectangular, square, circular, angular, scale-shaped etc, Opening Dia. ... 20m2. Openin Dia: 0. 3mm-25mmProcessing: the punched hole metal mesh, used to be in filteration & ventilation, set ...