... 4.no burr on the back Perforated Steel 1.material: Galvanized sheet2.sheet size: width 1250mm, length 2500mm, thickness 0. ... without burrMaterial: Cold Steel Plate, Stainless Steel Plate, Aluminium Plate, galvanized Plate, or others metal platesFeature: We use advanced CNC punch ... shapes of holes can be punched; Like Round, Square, Club, Hexagonal, Oblong and so on. We can produce non-standard types ...