The stainless steel sintered filter cartridge for petrochemical applications uses 304, 304L, 316, or 316L stainless steel fiber sintered felt and stainless steel woven mesh as the main filtration media. The sealing surfaces are TIG welded to ensure no leakage and no media shedding. The filtration layers adopt a multi-pleated structure to increase filtration area, maintaining flow while extending service life. The characteristics include a stable structure, resistance to impact and alternating load, stable breathability and separation effect, and excellent mechanical strength. It is suitable for high temperature (≤400 °C), high pressure, and strong corrosion environments, especially for high temperature gas filtration. Customizable in shape, filtration accuracy, and connection type, and reusable after cleaning.