Thickness 0.5mm-15mm PV Brackets Structure Ballasted Flat Solar Panel Roof Mounting Systems The deformation of aluminum alloy bracket material is about 2.9 times of that of steel, and its strength is about 70% of steel strength. Generally, anodic oxidation treatment is adopted for corrosion protection. Moreover, aluminum can form a protective film in the air automatically, so there is no need for anti-corrosion maintenance in later use. All of our Aluminum profiles are made