The stainless steel pleated filter is a filter that uses single-layer or multi-layer stainless steel woven mesh as the main filter material. The sealing surface of the filter element adopts argon arc welding process, and the filter layer is processed by 3-5 layers of stainless steel mesh. The filter layer is from inside to outside with two layers reinforced, the middle is the actual control filter layer, and the seams are welded by argon arc to form a complete filter element, which will not leak in the whole with no medium shedding. The filter material stainless steel woven mesh is a kind of filter made of different diameter stainless steel wires. After the stainless steel pleated filter is welded, strict post-processing and parameter testing are required.