... , Alundum mullite Application: cast iron castings, SG castings, automotive castings. Extruded honeycomb ceramic filter plate for applications of molten metal, such as cast iron ... , Dia.70mm, Dia.80mm, Dia.100mm.1. Technical data of extruded honeycomb ceramic filter plate: Type of FiltrationSteel filterIron filterCopper filterAluminum filterCap-style filtrationMelting ...