JZ2011New Rotary Piston pump 1,Highly nonreactive,oxide acid-caustic. 2,Tiny thermal expansion. MaterialPharma-APharma-ZThermal Expansion810Thermal Conductivity352.93Hardness1813Bending Strength400900Ceramic pump can be ... oxide acid-caustic, corrosion resistance, high temperature resistance, and suitable for repeating sterilization under hot condition. Superhigh material hardness---high wearability ...