Copper-clad aluminum alloy wire base material (CCAA-15H-2.05) adopts advanced cladding and welding cutting manufacturing technology to confine a 0.38mm (+0.005) high quality copper tape concentrically to a diameter of 8.6mm (±0.10). The outer surface of the aluminum alloy rod forms a solid metallurgical bond between the copper layer and the aluminum alloy rod core, and is the preferred material for the inner conductor of the coaxial cable and the wire and cable in the electrical equipment.