Galvalume Roofing Sheet

The alu-zinc alloy structure of the galvalum steel  plated is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at 600 ℃ high temperature, and its entire structure is made of aluminum-iron-silicon-zinc to form a dense quaternary crystal, Thereby forming a strong and effective barrier to prevent the penetration of corrosion factors.