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The next step in the manufacturing process is the extrusion of the copper billets into pipes. This is one of the most critical stages, where extruder machines play a vital role. An extruder consists of a heated cylinder and a screw mechanism that forces the copper billet through a die to form the desired pipe shape. The extrusion process can produce pipes of various diameters and wall thicknesses to meet specific application requirements. Advanced extrusion machines are now equipped with computer numerical control (CNC) technology, allowing for high precision and customization in pipe dimensions.