Hot dip galvanized steel coils have a rough appearance and a darker color, generally presenting a silver white color. Due to the influence of the manufacturing process, water streaks and droplets may appear on the surface. But its coating has strong adhesion and long service life. Cold galvanized steel coils have a smooth and bright appearance, and can be color passivated as needed to present different colors. But its coating is relatively thin and the anti-corrosion time is relatively short.

Hot dip galvanized steel coils are commonly used in fields that require high corrosion resistance and strength, such as marine engineering, chemical engineering, shipbuilding, aerospace, etc., due to their excellent anti-corrosion performance and strength. In these fields, hot-dip galvanized steel coils can effectively resist the erosion of materials by harsh environments. Cold dip galvanized steel coils are commonly used in fields such as construction, home appliances, automobiles, and light industry. Although its anti-corrosion performance is not as good as hot-dip galvanized steel coils, its cost is relatively low and it can meet the anti-corrosion requirements in general environments.

Hot dip galvanized steel coil: The thickness of the galvanized layer is generally between 60-200um. Due to the high galvanizing temperature, the formed galvanized layer is more uniform and stable, thus having a longer service life. Cold galvanized steel coil: The thickness of the galvanized layer is between 5-15um, which is relatively thin. Although it can also provide some anti-corrosion effect, its anti-corrosion ability is weaker compared to hot-dip galvanized steel coils.

Galvanized steel coils, as an important steel product, have a wide range of applications in various fields. Its excellent performance and wide application prospects make galvanized steel coils an indispensable material in the manufacturing industry. With the continuous advancement of process technology and the increasing market demand, the development prospects of galvanized steel coils will be even broader in the future.

Galvanized steel coils are commonly used for components in building structures, such as beams, columns, purlins, as well as for building roofs, walls, and other areas. Its excellent anti-corrosion performance can protect building materials from corrosion by the atmosphere and water. Galvanized steel coils are also widely used in automobile manufacturing, such as manufacturing car bodies, doors, engine covers, and other components. Its corrosion resistance helps to extend the service life of automotive components.