Industrial, Castings, Cast Iron, Filters, HIGHLY EXOTHERMIC INSULATING SLEEVES for feeder of pieces, melted in iron, steel and all the alloys of those metals, cast in sand; systems. These sleeves provide good pieces, without porosity and without reaction of the metal with the sleeve. Moulding mode, Manually, Pressure, Blow explosion, Impact. Melting applications, Steel (Carbon steel, High and low alloy, stainless, Hadfield), Iron ...