perforated steel/aluminum sheet/panel 1.Hole Dia:0.3-500mm 2.Plate Thickness:0. ... 2-30mm 3.ISO9001:2008 4.All shapes perforated steel/aluminum ... carbon steel, stainless steel, stainless steel, aluminum steel, plywood, hip board, density board, plastic film, etc.5.Hole shapes:Round, rectangular, square ...