perforated steel/aluminum sheet/panel 1.Hole Dia ... 3.ISO9001:2008 4.All shapes perforated steel/aluminum sheet/panel1.Hole Diameter:0.3-500mm2. ... 2-30mm3.ISO9001:2008 4.Material:Low carbon steel, stainless steel, stainless steel, aluminum steel, plywood, hip board, density board, plastic ... outdoor decoration, making the crafts, production of steel and wood furniture, grain ventilation, acoustics unit in ...