Square perforation with angled corners
Triangular perforation
Diamond perforation
Keyhole perforation
Hexagonal perforation
Club perforation
More perforations
Derived from DIN
Special perforation designs are essentially derived from DIN specifications but may vary among perforated plate manufacturers; these include such as double-nose perforations, slot bridge perforations, hexagonal holes, random holes, pyramid profile, herringbone perforations etc.
