... 5mm 3) Outer diameter : 32mm, 57mm, 600mm Features:1) Material: stainless steel 304,321, 316L2) Aperture: 0.1mm, 0.2mm, 0.5mm ... 's requirements.5) Used for anti-sand in the well or other water filtration places Our products are widely used ... making, mining, crement-producing, food-processing, oil-refiningm painting as well as the industries of cigarete, sugar, foodstuff, noise-sliencer, encironmental ...