Product Description

he nan gong yi mi he bai shui ni chang http://***** Physical property: 1. Grain shape: Round 2. Colour:Black Brown 3. Grain Size: *0/*0, *0/*0, *0/*0, *0/**0, *0/**0, **0/**0; 4. Density; 1.***2.*5(g/cm≥) 5. Refractory; ≥***0℃ 6. Heat Conductivity: (***0℃)5.*7W/M。K 7. Linear Expansion: (******0℃)6X***6/℃ Requirements for Binder: Less than ****0 resin usage (comparing with other angular sand), Sodium Silicate≤4％ （Sodium Silicate+Carbon Dioxide）