Coaxial cable

A coaxial cable comprising:

• a coaxial wire having a central conductor, an outer conductor, an inner insulating layer between said central and outer conductors and an outer insulating layer covering said outer conductor, a section on a first end of said outer insulating layer being cut so as to expose said outer conductor and which is pulled toward a second end of said insulating layer such that said outer conductor covers said first end of said outer insulating layer;
• a hollow metal tube having an inner wall, a first end and a second end opposite to said first end, said second end being restricted to possess a polygonal wall surface so as to receive one end of said coaxial wire when said coaxial wire is inserted into said second end of said hollow metal tube wherein said outer conductor is in tight electrical contact with an inner portion of the polygonal wall surface, said hollow metal tube further having a stop member provided therein adjacent to said first end thereof;
• a plug member having a central electric conducting blade, an annular electric conducting wall and an insulating material disposed between said central electric blade and said annular electric conducting wall, a first end and a second end opposite to said first end, said second end is inserted into said first end of said hollow metal tube such that said first and of said hollow metal tube being in electrical contact with said annular electric conducting wall of said plug member and said central electric conducting blade axially extends into said hollow metal tube and is in electrical contact with said central conductor of said coaxial wire while said stop member prevents said plug member from further moving into said metal tube, said first end of said plug member protruding out from said first end of said hollow metal tube, said plug member and said hollow metal tube being welded together;
• and
• a plastic sleeve provided around said hollow metal tube.