Carbon ígwè ọkpọkọ mmepụta ụzọ (1) enweghị nkebi ígwè ọkpọkọ- na-ekpo ọkụ akpọrepu tubes, oyi adọta tubes, extruded tube, top tube, oyi akpọrepu tube (2) welded ígwè ọkpọkọ (A) dị ka usoro- arc welded ọkpọkọ, electric iguzogide. welded anwụrụ (elu-ugboro, ala ugboro), gas anwụrụ, ọkụ weld ...
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