Varieties of Stainless Steel Wire Mesh Square Opening: Stainless Steel Square Wire Mesh produced by Longyi is classified into two types according to the weaving patterns: Stainless steel square wire mesh plain woven Stainless steel square wire mesh twill woven Stainless Steel Wire Mesh Plain weave is the most commonly used weave. Each warp wire crosses alternately above and below each weft wire. Warp and weft wires generally have the same diameter. Twill Weave Stainless Steel Wire Mesh is made by each weft wire passing alternately over two, and then under two successive warp wires and each warp wire passing alternately over two and under two successive weft wires. It is possible to be used to allow a heavier than standard wire diameter.