The needle cokes are finely crushed and selectively sieved to ensure that only the desired particle sizes are retained. These particles are then combined with pitch in precise proportions to form a paste-like mixture. The resulting mixture is then extruded and molded into cylindrical shapes using molds of specific dimensions.

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To carbonize the pitch, it is subjected to heat treatments of approximately 1000°C.
If baking process is carried out in a short time, cracks and pores could occur due to volatile substances included in the pitch or shrinkage. Because of that, a controlled baking and cooling process is carried out over a duration of approximately one month.

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During the baking and re-baking processes, volatile substances included in the pitch evaporate, creating pores. The pores are filled again with pitch, to increase its density.
The pitch impregnation process is repeated multiple times for the electrode joints (PIN) to ensure optimal density and strength.

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To carbonize the impregnated pitch, a secondary heat treatment is conducted at temperatures below 800°C. The rebaking process takes approximately one week.

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Rebaked electrodes undergo a heat treatment process known as graphitization, where electric Joule heating is employed to raise the temperature to approximately 3000°C. The graphitization process depends on furnace types, typically taking anywhere between a week to a month to complete.

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Both electrode body and the joint are machined using special machine to achieve precision levels as fine as 1/1000mm, depending on the part.

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After undergoing product property measurements and conducting visual inspections, the product is shipped out as the finished product.

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