The permeability (i.e. the open area in %) of the round mesh is the smallest of all expanded metal types. It is very often used instead of perforated sheets, although the shape of the mesh is not a precise circle. It is usually cheaper than perforated sheets and it is supplied mostly as flattened. Expanded metal is produced according to the DIN 791 standard.
Decorative and safety covers, architectural elements, partitions, panels, gratings, filters, reinforcements, stair steps, grids, sorting, acoustic purposes.