The folded filter element of sintering felt is made of stainless steel metal fiber after sintering. It has the characteristics of high porosity, good permeability, strong ability to absorb pollutants, corrosion resistance, high temperature resistance, long service life, and can be used for many times. It is mainly used in the filtration and purification of various polymer melts in the chemical fiber and film industries; the filtration of various high temperature and corrosive liquids in the fields of petroleum and chemical industry; the precision filtration of various hydraulic oil and lubricating oil in mechanical equipment; the filtration of industrial liquids such as medicine, biology and beverage; the dust filtration of heavy oil slurry in refineries. Technical parameters: Design pressure: 0.6 ~ 2.5MPa Design temperature: 480 ℃ Filtering accuracy: 1-200 μ M