Abstract: Steel tubes for automobile purpose vary in their shape,strength and accuracy according to different services.To meet the requirements for category,size and quality of the tubes,it is a must to have advanced manufacturing technology,complete process flow and testing/inspecting facilities as well as stringent quality assurance program.Briefly introduced in the paper are such aspects concerning the hi-frequency electric welded tubes as categories, guantity demanded technical criteria,manufacturing process and techniques for quality control.