Coaxial electric wire and method for manufacturing the same

A method for manufacturing a coaxial electric wire,

• said coaxial electric wire at least including:
• an inner conductor;
• an inner insulating layer covering a periphery of the inner conductor;
• an outer conductor covering a periphery of the inner insulating layer;
• and
• an outer insulating layer covering a periphery of the outer conductor,
• wherein the inner insulating layer is made of a first insulating tube having an elongated cylindrical shape and an insulation performance, the outer insulating layer is made of a second insulating tube having an elongated cylindrical shape and an insulation performance, the outer conductor is made of a conductive tube having an elongated cylindrical shape and conductivity,
• said method comprising the steps of:
• previously producing the first insulating tube having an inner diameter substantially the same as an outer diameter of the inner conductor, the conductive tube having an inner diameter substantially the same as an outer diameter of the first insulating tube, and the second insulating tube having an inner diameter substantially the same as an outer diameter of the conductive tube;
• inserting the inner conductor into the first insulating tube;
• inserting the first insulating tube into the conductive tube;
• and
• inserting the conductive tube into the second insulating tube.