Galvanized steel coil is an important alloy material that is often used in daily life.　

The galvanized steel coil is composed of an aluminum-zinc alloy structure, which is composed of 55% aluminum, 43% zinc and 2% silicon solidified at a high temperature of 600 ° C. The entire structure is composed of aluminum-iron-silicon-zinc, forming a dense quaternary An alloy of crystals.

The corrosion resistance of "galvanized steel coil" is mainly due to the protective function of aluminum. When the zinc is worn away, the aluminum forms a dense layer of aluminum oxide, preventing corrosion-resistant substances from further corroding the interior. Galvanized steel coil has good heat resistance and can withstand high temperatures of more than 300 degrees Celsius, similar to the high temperature oxidation resistance of aluminized steel sheets, and is often used in chimney pipes, ovens, luminaires and fluorescent lamp shades. The thermal reflectivity of galvanized steel coil is very high, twice that of galvanized steel sheet, and it is often used as a thermal insulation material. The economy is strong because the density of 55%AL-Zn is lower than that of Zn, so under the same weight and the same thickness of the gold-plated layer, the area of the galvanized steel coil is more than 3% larger than that of the galvanized steel coil.

Therefore, galvanized steel coils can be used in many industries such as construction, automobiles, home appliances, and agriculture.