Adhesive bonding has emerged as a unique and highly developed joining process with applicability to a wide variety of engineering materials. Because the stresses of adhesive bonded joints are distributed much more uniformly than mechanical fasteners and many welds, they can be used to improve fatigue resistance and to join thin or fragile parts. This study is to investigate whether welding structure can be replaced by adhesive bonding as structural joints. The bonding strength was evaluated with the manufacturing factors of overlap length, overlap width, added pressure and surface treatment. These data provide bonding structure with design criterion and contribute to raising productivity and reducing in cost.