Stainless Steel Double-Side Lapping Machine is designed for the processing characteristics of stainless steel, such as high toughness, work hardening tendency and easy formation of drawing lines on the surface. It adopts a double-sided alignment polishing process system. Relying on precision planetary transmission and high-rigidity machine frame structure, it realizes synchronous and uniform finishing of the upper and lower surfaces of workpieces. By optimizing the composite grinding trajectory, the equipment improves the uniformity of stainless steel planar processing and reduces the uneven polishing marks caused by the material itself. The equipment enables fine adjustment of polishing pressure, spindle speed, processing duration and polishing slurry flow rate. Multi-stage process schemes including rough polishing and fine polishing can be matched according to different workpiece types such as stainless steel thin plates, sealing valve plates and precision shims. Material removal is controllable at a micro level throughout the process, which effectively optimizes the flatness, parallelism and surface roughness of workpieces, alleviates surface work hardening and retains stable mechanical properties of the base material. The equipment adopts standardized clamping and positioning. It runs smoothly during processing with excellent vibration suppression, reliably eliminating process defects such as scratches, ripples and partial uneven brightness on workpiece surfaces. Process parameters can be saved and reproduced, suitable for R&D sample trial production and small-to-medium batch standardized manufacturing to guarantee consistent precision among batches of workpieces. Stainless steel workpieces after double-side polishing feature uniform surface quality on both sides and small dimensional deviation. They meet high-precision requirements for precision sealing, precision assembly and instrument components, and are widely applied in machinery manufacturing, hydraulics & pneumatics and precision component processing industries.