The utility model belongs to an automobile component, in particular to a heavy duty automobile exhaust pipe with flanges without welds. The utility model relates to a flange without welding seam, which is connected with a metal tube, and the flange is a flanging double layer circular hole plate which is connected with a metal tube, and the thickness of the metal pipe wall is between 1 and 3.0mm. The utility model has the advantages that: because of the metal tube and the flange of the utility model of the connection as a whole, does not need welding, simple structure, in production and use, there is a time saving, high production efficiency, low cost, and has the advantages of good quality control etc..
【技术实现步骤摘要】
【技术保护点】
1.一种带法兰的无焊缝汽车排气管,其特征在于:所述的法兰(2)是一个与金属管(1)连体、无焊缝的翻边双层圆孔板,其金属管(1)的管壁厚:为1.0~3.0mm。
【技术特征摘要】
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