... twill Dutch. Also supply welded multi-layer pack filter used in rubber industry, plastic industry, oil industry and cereal sifter. ... Filter Discs: Filter discs are mainly used in the absorption, evaporation and filtration process in petroleum, chemical, medicine, metallurgy, machinery, ship ... mist drop or liquid foam or used as air filter in cars and trucks. Disc diameter;from 5mm to 600m Stainless ...