Czochralski Crystal Puller Work Roll from Canada

A cast steel work roll used in the Czochralski method crystal pullers for producing monocrystalline silicon boules from which semiconductor wafers are sliced. It falls under HTS 8455.30.0035 as a cast steel roll for rolling mills, weighing not over 2,268 kg, specifically adapted for precise material processing in semiconductor boule formation. The roll's surface ensures uniform pulling and minimal contamination during crystal growth.