... sheet is smooth on the face and on the back without burrMaterial: Cold Steel Plate, Stainless Steel Plate, Aluminium Plate, galvanized ... .5 meter, Different shapes of holes can be punched; Like Round, Square, Club, Hexagonal, Oblong and so on. We can produce ... .51%round3516032.65%round5826035.43%round81226040.31%round101226062.98% 2mm round holes galvanized sheet Perforated steel