Material: Stainless Steel Wire, Nickel Wire, Brass Wire.etc weave: twill,dutch,reverse,five-harness Mesh:20/270--500/3500 Material:Stainless Steel Wire, Nickel Wire, Brass Wire. Weaving ways: Dutch Plain Woven, Dutch Twill Woven, Reverse Dutch Woven, Five-harness Woven twill weave allowing a double layer of weft wires. There are no apertures in the true sense of the word as the filtrate follows a ...