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In this paper is presented a reserch regarding the surfece of hydroforming tubs, made by aluminium and cooper. Hydroforming tubes is very important production method considering that metal tubes are widely used in a great variety of engineering products, such as automobile, aircraft, air conditioner, air compressor, exhaust systems, fluid lines. The results show that the surface of tubes it is influence of the hydroforming process. Also it is very important the material of the tube in research of surface.