Z120 is the coating name, which means that the coating thickness on both sides is approximately 120g/㎡ or 36g/㎡ (three-point test). Z120 grade galvanized coil is coated with zinc to make it more durable.

Galvanized steel coils are covered with a zinc coating to provide corrosion resistance. G40 galvanized steel coil is a galvanized layer name or A653 standard specification specified in the hot-dip coating process galvanized or zinc-iron alloy steel coil requirements.

G60 is the coating grade of steel coil after continuous hot dip plating process. G represents the "galvanized" or galvanized layer of the product. The number 60 refers to the weight of the zinc around the steel coil or the thickness of the entire double-sided coating.

DX51D material is a mild steel galvanized layer for steel products. Specifically, DX51D is a steel grade characterized by its cold-formed bending and profiling qualities.

G90 refers to the coating type and coating weight on the steel coil. "G" means that the coating is galvanized. Meanwhile, the number "90" represents the weight of zinc on the steel. G90 galvanized steel is hot-dip galvanized cold-rolled steel to improve durability.

Hot-dip galvanizing is one of the effective means to delay the environmental corrosion of iron and steel materials, it is the surface of the cleaned, activated iron and steel products immersed in molten zinc, through the reaction and diffusion between iron and zinc, in the iron and steel products surface plating good adhesion of zinc alloy coating.

AZ stands for aluminum-zinc alloy, which is the material of the steel coating. AZ50 refers to the total weight of both sides of the aluminum-zinc alloy coating in the three-point test in ASTM a972 standard is 0.50 ounces/square foot, which is equivalent to 150 grams/square meter.

AZ55 is the standard for galvanized steel sheets and coils used in a variety of applications, including roofing and siding. The AZ55 name refers to the thickness of the coating on the coil, which is between 0.375 and 1.5mm (0.015 and 0.059 inches).

AZ150 galvalume steel coil has a coating thickness of 18 microns on one side and 36 microns on both sides. The coating alloy of the steel consists of 55% aluminium, 43.4% zinc and 1.6% silica. This coating of steel acts as a passive barrier to general corrosion. It also helps protect steel from trimmed edges and scratches.

Galvalume steel coil is a type of steel that is coated with zinc for protection by an electroplating process. The galvanized layer is applied to cold rolled steel at low temperatures. So it is also known as cold galvanized steel.

PPGI coil is a popular material. It is based on hot-dip galvanized steel sheet or electro-galvanized steel sheet (galvanized layer) and is coated with multiple organic coatings to prevent it from rusting.

Color-coated galvanized sheet PPGL uses hot-dip galvanized sheet, electro-galvanized sheet as the substrate. It is coated with one or more layers of liquid coating after surface pretreatment and roller coating method. After baking and cooling, the surface has good weather resistance, superior processing performance and is rich in colors.