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Galvanized Steel Coil

Galvanized Steel Coil China supplier 0.2-4mm in thick is made of carbon steel coated in zinc utilizing the hot-dip process. The end result of this process is a layer of zinc on each side of the steel sheet or coil that is tightly adhered to the steel through the formation of an iron-zinc alloy bonding layer.

Galvanized Steel Coil Grades:TDC561D+Z 、SGC440、DX56D+Z、DX54D+Z、DX53D+Z、DX52D+Z、DX51D+Z、SPCG、SPCE、SPCD、SGCC

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In galvanized coils, a sheet of steel is dipped in a bath of molten zinc, causing it to adhere to a sheet of zinc on its surface. It is mainly produced by continuous galvanizing process, that is, galvanized steel sheets obtained by continuously immersing coiled steel sheets in galvanizing tanks; alloy galvanized steel sheets. This kind of steel panel is also made by hot dip method, but it is heated to about 500℃ immediately after coming out of the tank, so as to form a zinc-iron alloy film. This galvanized coil has good coating adhesion and weldability.


The sheet metal is first subjected to an annealing procedure, followed by cooling, before a layer of zinc is applied to fix the desired properties of the material.

Rolls prepared in this way are dipped into an electroplating bath, where the electrolysis process begins. The thinnest zinc film formed on the iron surface protects it from oxidation, corrosion when in contact with water and oxygen, and increases the service life of the material. Galvanized steel will not require maintenance or replacement for many years.

The protective properties of the material can be enhanced by coating the surface with special polymers or powder coatings.

There are two powerful hot-dip galvanizing units in our workshop, enabling our product output to reach 40,000 tons per month, or 480,000 tons per year.


Product name Galvanized Steel Coil & Sheet & Plate; GI coil.
Steel grade DX51D+Z, DX52D+Z, DX53D+Z, S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z, S550GD+Z, SGCC, SGCD1, SGCD2, SGCD3, SGC340, SGC400, SGC440, SGC490, SGC570, etc
Thickness 0.2-4.0mm
Width 200-1500mm
Zinc coating Z40-Z350g/m2
Standad ASTM, GB, JIS, EN
Surface structure regular spangle coating; small spangle coating; zero spangle coating.
After-treatment mode Normal passivation; Environmental passivation; Fingerprint resistant; Oiled; Passivation and oiling

Application field

Due to its versatility, galvanized steel in coils is widely used in various fields of activity.

put up. It is used in the arrangement of roofs, the manufacture of fences and ceilings, the installation of modular buildings, the cladding of buildings and structures and the laying of ventilation systems, as a basis for the manufacture of pipes, wires, profiles. Galvanized steel is used for the manufacture of structural elements of sandwich panels, the sheathing of heating pipes, the laying of metal tiles and corrugated cardboard, the installation of drainage pipes, etc.

Automobile industry. The material is used in the manufacture of front and interior parts of the bodywork and is also frequently used in the repair of front body parts of trams, buses and trolleybuses.

Mechanical engineering and instrumentation. The casings of electromechanical equipment, household appliances, and metering devices are made of galvanized steel.

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