The specifications of galvanized coils are typically expressed in terms of thickness, width, zinc coating weight, and steel base material grade. Standards vary depending on the application.
Regarding thickness, the common range is generally between 0.15mm and 3.0mm, with 0.3mm to 1.5mm being the most widely used range. Thinner galvanized coils are often used for light stamping parts and appliance housings, while thicker coils are used for building structural components or applications requiring high strength.
Regarding width, standard galvanized coils are typically between 600mm and 1500mm, with some special specifications reaching 1800mm or even wider. Different widths mainly depend on subsequent processing equipment and the needs of the industry. For example, the construction industry prefers wider materials, while the appliance industry often uses narrower strips.
Zinc coating weight is an important indicator of corrosion resistance, usually expressed in "g/m²". Common specifications include Z60, Z80, Z100, Z120, Z180, and even Z275. A higher zinc coating value indicates a thicker zinc layer and stronger corrosion resistance, but also a higher cost.
Galvanized coils are also differentiated based on the strength grade of the base material, such as ordinary cold-rolled substrate and high-strength steel. Different grades are suitable for different processing methods and load-bearing requirements. In actual selection, the specific specifications are generally determined by considering the usage environment, processing method, and cost.