Perforated Metal Sheet Hole:round hole,square hole,etc. Quality Certification:ISO9001:2000 Metal ... 310s, Aluminum,copper,carbon steel,Galvanized.Opening Pattern:Rectangle, square, round, triangular, blossom, hexagonal and many other special patterns according ... sorting tables, acoustic panels and anti slip flooring.Expanded metal sheet, perforated mesh,etched mesh,punch mesh.Any shape Perforated ...