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Application In the course of metallographic sample preparation, the polishing of the sample is one of main operations. The sample through grinding and polishing is bright like a mirror.thistype metallographic sample polishing machine is a kind of classical polishing machine, featured by stable transmission, low noise, easy operation and maintenance, etc., and applicable to polishing of various materials. The machine is applicable to the metallographic labs of plants, research institutes and universities and colleges. Technical Parameters 1. Diameter of Polishing Disc: ?200mm; 2. Speed: 1400r/min; 900r/min (custom-made); 3. Power Supply: 220V, 50HZ; 380V, 50HZ (custom-made); 4. Dimensions: 730mmx400mmx340mm; 5. Weight: 35kg The shipment will be arranged in 1-3 working days( not including customized product), and takes about another 3-9 working days to reach you.