In this work, two type bimetallic tubes were fabricated from aluminum alloy and pure copper using the tube sinking process. The joint quality of the bimetallic tubes was evaluated using so called push experiment to determine the bonding shear strength. In addition, different microstructural studies were conducted in order to study the interface character of the layers. It was found that the bonding shear strength of the aluminum clad copper was slightly higher than that of the one for the copper clad aluminum. Also, the former exhibited lower bonding shear strength variation than the later. The discontinuous intermetallic components were detected at the later interface for both type of bimetallic tubes. Also, it was interesting to note that a relatively thick aluminum oxide layer was found to be formed partially at the copper clad aluminum tube layer interface. The sings of the cold pressure welding mechanism based on the film theory were indicated in aluminum clad copper, whereas localized oxidation and wear phenomenon between the aluminum and copper layers deteriorated the bonding strength in copper clad aluminum. Macrotexture and crystalline size were measured by X-ray diffraction method. Substructure features including grain distribution, misorientation and KAM were yielded from EBSD data. The results showed that the orientation evolved from {110} 001 (Goss component) to 111 fiber along with the tube axe. However, transient from Goss component to 111 fiber texture which was quantified by calculating of ratio of I 111 /I 100 was different in al alloy and copper. The former result was related to differences in the SFE of the al alloy and copper. EBSD investigation showed that cell/subgrain had been formed in cu and al alloy parts. The cell size/sub-grain smaller than 0.7 micron was found in the copper part, however they were larger than 1.5 micron in al alloy part. Furthermore, distribution of the grain size in the thickness direction was not homogenous.