Using expanded metal grating or expanded metal mesh is to ensure safety, strength and anti-skid surface of the most economical manner, especially on the runway, working platforms. Because it is very easy to cut into the shape of irregular, rapid welding can quickly install or use accessories Expanded Metal Grating is identified by weight per square foot. Carbon Steel Expanded Metal Grating is available in 3, 3.14, 4, 4.27, 5, 6.25 and 7 pounds per square foot. Aluminum Expanded Metal Grating is available in 2 pounds per square foot and Stainless Steel Expanded Metal Grating is available in 3.3 and 4.5 pounds per square foot. Projection Mesh Expanded Metal Safety Grating features small tooth-like projections on the upper surface of the mesh. These projections provide an excellent non-slip surface where additional anti-skid surfacing is desired. Projection Mesh Expanded Metal Grating is available in carbon steel in 2 and 3 pounds per square foot and in aluminum a 1 pound per square foot.