... hole, round hole,and so on, used in fencing Perforated metal meshMaterial: Low-carbon steel plate, aluminum sheet, stainless ... steel plate, aluminum magnesium alloy board, galvanized iron sheet, copper plate, nickel board.Expanded metal mesh's hole shape ... scale hole, tension heterotypic hole, etc.Using: Used in ceiling, wall plate absorption material, available in building staircase, balcony ...