These are made up of overlaid wires at right angles to each other, joined by spot-welding. Depending on the distance between the wires in the two directions and their diameter, it is possible to obtain square or rectangular meshes with variable levels of resistance and stiffness. They may be supplied in rolls of various widths and in flat shaped panels. It is possible to make them from all metal materials and alloys, that can be drawn into wire, such as for example, carbon steel, stainless steels, Nickel-Chromium alloys.