Performance alumina/zirconia Ceramic Piston High strength and mechnical strength High density Stable dimension. Specifications: 1) Material: a) 95% Al2O3 b) 99.5% Al2O3 c) ZrO2 2) Surface finish: a) Normal polish Ra 08-1.0μm b) Fine polish Ra 0.4-0.6μm c) Diamond polish Ra 0.2μm 3) Properties: a) Wear resistant b) Corrosion resistant c) Heat resistant . d) Stable dimensions e) Lightweight , f) Long performance life Our services: 1. Your inquiry related to our products or prices will be replied in 24hours. 2. Manufacturer with large capacity, ensure the fast production cycle after confirmed the order. 3. Our professional technicians will answer your entire inquiry in patient. 4. To meet the refractory solutions, we can serve as your instructions. 5. Protection of sales area and private information for our entire customer.