RS Pro Perforated Galvanised Steel Sheet. RS PRO galvanised steel perforated sheet is an excellent range that can also be painted. The perforated sheets are an excellent method to cover, enclose, divide, decorate and ventilate a space. One of the key attributes of perforated metal sheets are their structural strength and versatility. With, a wide range of applications the perforated sheets offer you endless opportunities. Features and Benefits. Galvanised steel Can be painted after de-greasing -5mm/+10 mm on width and length Selvedged border on configuration Versatile Structural strength