... SteelStainless SteelProduction TechnologyWeavingPunchingElectrochemical machiningProduction StandardISO3310-1:1990 R20/3,R20,R40/3 series, ASTM, TYLER, JIS, DIN, BSIISO3310-2 ... :1990 R20/3,R20,R40/3 series, ASTM, TYLER, JIS, DIN, BSIISO3310-3:1990 ... R20/3,R20,R40/3 series, ASTM, TYLER, JIS, DIN, BSISpecificationSieve Diameter(mm ...