"Copper bar" refers to a solid piece of copper in a bar or rod shape. Commonly used in electrical engineering, construction, and various industrial applications, copper bars possess high electrical conductivity, making them ideal for electrical transmission and grounding purposes. They are also employed in heat exchangers and other systems where their thermal conductivity is valuable. The versatility of copper bars allows them to be found in various diameters, lengths, and even special alloys to suit specific requirements.