The difference of Reverse Dutch Weaving compared with Plain or Twilled Dutch weave lies in the thicker warp wires and less weft wires. Reverse Dutch woven el wire cloth offers finer filtration and finds popular application in petroleum, chemical, food, pharmacy and other fields. Reverse Dutch Wire Cloth No. Wire Dia. warp× weft ( mm) Absolute Filter rating ( um) Porosity rate% Weight ( kg/ sq.m) Mesh/ Inch ( warp× weft) RDW18 0.4 0 x 0.60 210-230 60 4.21 63 x 18 PDW20 0.24 x 0.60 210 58 3.38 107 x 20 RDW40 0.20 x 0.45 130 58 2.74 170x 40 RDW50 0.20 x 0.40 105 55 2.69 132x32 RDW46 0.15 x 0.30 85 54 2.05 171 x 46 RDW75 0.09 x 0.20 38-45 53 1.27 290x75 RDW102 0.040x 0.16 40-48 41 0.92 615x102 RDW130 0.04 x 0.13 18-23 49 0.85 625x135 RDW150 0.035 x 0.10 16-20 54 0.6 720x150