
Fused Silica Sand 40-70mesh for Refractory, &Investment Casting with Best Price. High Purity SiO2: SiO2 content above 99.95% with low impurities like Al2O3 and Fe2O3. Near Zero Thermal Expansion: Coefficient of thermal expansion is 0.1, ensuring extreme thermal stability. Customizable Color: Available in White or Transparent color options for specific needs. Multi-Form Specifications: Available as Block, Granular, and Powder with various mesh sizes. Stable Chemical Properties: Chemically stable with a pH value of 6, suitable for harsh environments. OEM/ODM Support: OEM and ODM services are available for customized production requirements. Wide Application Range: Ideal for Rubber, Chemical, Construction, Ceramic, and Glass industries. Fast Lead Time: Average lead time within 15 workdays for both peak and off-season.