The graphite electrode is mainly made of petroleum coke and needle coke, and the coal bitumen is used as a binder. It is made by calcination, compounding, kneading, forming, baking, graphitization and machining.Small diameter graphite electrode,the diameter range is from 75mm to 225mm, the small diameter graphite electrodes are widely used in various industry production such as calcium carbide, the refinement of carborundum, or the smelting of rare metals, and Ferrosilicon plant refractory.