... iron and steel foundries, Lost-foam, Precoated sand;, Sodium silicon sand , Resin sand, Precision casting etc. Advantages:Spherical grain, low ... refractory, low density, neutral materials Application:Waterglass bonded sand, resin bonded sand, precision casting, Expendable Pattern Casting (EPC), Copper ... mesh; 100-140 mesh; 170 meshPacking: 25kg/bag or others AFS:20-150 Ceramic Foundry Sand For Casting