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Once the copper is prepared, it undergoes melting in a high-temperature furnace, where it reaches a liquid state. The melting process is crucial, as it determines the quality of the final product. Induction furnaces or electric arc furnaces are commonly used due to their efficiency and ability to maintain precise temperature control. After melting, the molten copper is cast into molds to form billets or slabs, which will later be processed into pipes. Continuous casting machines may also be employed to streamline production and enhance the overall efficiency of the casting process.