Plain Weave Wire Mesh is the most commonly used weave. Plain Weave Wire Mesh has a square opening that's why it is also called as Square Wire Mesh. Each weft wire passes alternately over and under each warp wire and vice versa. Warp and weft wire diameters are generally the same. Plain weave wire meshes are available with apertures from 10.7mm (2 mesh) to 0.05mm (325 mesh). Plain Weave wire mesh could be Woven and Welded.