... 3.Mesh:10-1500mesh Description of Filter Discs For PP Plastic Sheet Extruder :Material: SUS202, 302, 304, 304L, 316, 316L, iron wire ... acid, soda, corrosion, high temperature etc.Appication: widely used in plastic sheets extruders. (Plastic Sheets: PP,PS,PET,PE,PVC etc)