Common open area or porosity: 20%, 26%, 23%, 30%, 40% and 35%.
Hole Diameter:1.0-6.0mm
Thickness of metal Plate:0.2-3mm
Material to be punched:
Plain steel sheet and galvanized steel sheet;
Stainless steel sheet;
Copper sheet;
Brass sheet;
Aluminum sheet;
Other metals alloys.
Punched openings : Round, square, triangle, diamond, stright line slot, hexagonal, cross, decorative, etc. The round hole perforation is the most popular type of perforated pattern used and is manufactured in coils or sheets.