WISCO Galvanized Coil Zinc Coating 120g Thickness 0.75mm Width 1250mm Corrosion resistant Building Use

Description :

  Wuhan Iron and Steel Galvanized Coil is a metal material that is coated with a layer of zinc on the surface of cold-rolled steel plates, mainly used to solve the problem of rusting of steel substrates in humid or corrosive environments. This product forms a dense zinc protective layer through hot-dip or electroplating processes, with a zinc layer weight of 120 grams per square meter, providing excellent resistance to atmospheric corrosion. Typical working conditions include building roofs, wall enclosures, household appliance casings, and automotive parts manufacturing. The galvanized coil of WISCO combines the high strength of WISCO substrate with the anti-corrosion properties of zinc layer, and is suitable for industrial and civilian fields with high requirements for surface quality and durability. It is one of the indispensable basic raw materials in modern manufacturing industry.

  The specification parameters of the galvanized coil of Wuhan Iron and Steel Corporation are clear, with a thickness of 0.75 millimeters, a width of 1250 millimeters, and a length usually in the form of a coil (C represents Coil, i.e. coil shape). The weight standard for the zinc layer is 120 grams per square meter (double-sided total), which meets the requirements for ordinary or high-grade galvanized layers in the national standard GB/T 2518-2019 "Continuous Hot dip Galvanized Steel Plates and Strips". The substrate is usually made of high-quality low-carbon steel or low-alloy high-strength steel produced by Wuhan Iron and Steel Group. The surface structure can be normal zinc flower, small zinc flower or no zinc flower, depending on the subsequent coating requirements. The product implements strict dimensional tolerance control, with thickness deviation usually within ± 0.05mm and width deviation controlled within the range of 0~+5mm, ensuring dimensional stability and forming accuracy during downstream processing.

  In terms of selection, WISCO galvanized coils are suitable for scenarios that require moderate anti-corrosion capabilities and are cost sensitive. The 120g zinc layer belongs to the conventional anti-corrosion level and is suitable for indoor dry environments or outdoor general atmospheric environments. If it is located in high humidity, high salt spray coastal areas or chemical environments, it is recommended to choose products with higher zinc layers (such as 180g, 275g) or similar products coated with zinc aluminum magnesium. Compared with color coated coils, the galvanized coils of Wuhan Iron and Steel Corporation retain the original color of the metal and are suitable for subsequent spraying or direct use; Compared with ordinary cold-rolled sheets, its advantage is that it can be processed directly without additional rust prevention treatment. Not suitable for direct contact environments with strong acids and bases. Stainless steel or special alloy materials should be selected for such working conditions. When purchasing, it is necessary to confirm the surface quality level (such as FC/FD) to meet the appearance requirements.

  During the installation and maintenance of galvanized coils at Wuhan Iron and Steel Group, attention should be paid to avoiding scratches on the zinc layer. The cut surface should be promptly repaired with zinc rich paint to prevent corrosion of the incision. When storing, it should be kept dry and ventilated to avoid rainwater getting wet and causing white rust. It is recommended to store indoors or cover with a rainproof cloth. The typical service life can reach 10-20 years in general atmospheric environments, depending on the corrosiveness of the environment and the integrity of the zinc layer. Daily maintenance mainly involves regularly cleaning surface dust and pollutants, and checking for signs of looseness or corrosion at connection points. Common faults include collision damage during transportation, oxidation white spots caused by improper storage, and zinc layer peeling due to improper mold clearance during processing. Stamping process parameters need to be adjusted to adapt to the friction characteristics of galvanized sheets.

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