Ceramic beads is high grade green casting material, made of high Alumina Calcined Bauxite, processed through fusing, spraying, sieving, get rid of impurity and special procedures. With ideal spherical shape, excellent fluidity and filling property, Ceramic beads is widely used in various sizes of steel/iron/alloy casting parts. It is suitable for various bonds of casting mold and can meet different needs of various customers. Specification (Size): AFS20/AFS30/AFS40/AFS50/AFS55/AFS65/AFS75/AFS90/AFS100 Special grades can be customized. Shape: Spherical  Shape