Galvanized sheet 1220x2440x1.2 refers to a layer of zinc-plated steel. Galvanized is a frequently used and effective method for preserving the economy, about half of the world zinc production are used for such processes. Galvanized steel sheet: thin steel sheet into the melted zinc bath, so that the surface adhesion layer of zinc sheet steel. At present, continuous galvanizing production process, that is continuously rolled steel sheet was immersed in the molten zinc plating bath is made of galvanized steel; surface condition: galvanized sheet 1220x2440x1.2 coating process due to the different treatment, surface state is different, such as the common spangle, small spangle, smooth spangle, spangle-free surface phosphate processing and the like. Product quality galvanized sheet Features: 1, the appearance of smooth, non-zinc tumor, burrs, silvery white; 2, thickness are controlled within 5-107μm of arbitrary choice; 3, no embrittlement, no temperature hazards, can be mechanical properties of the material to ensure constant; 4, there are flowers galvanized sheet may need to replace part of hot-dip galvanizing process; 5, flowers galvanized corrosion resistance, up to 240 hours of neutral salt spray test. According to production and processing methods, [Shenzhen] galvanized sheet can be divided into the following categories: hot-dip galvanized steel (commonly known as galvanized iron), electro-galvanized steel sheet, single-sided or double-sided difference thick galvanized steel, galvanized steel alloy composite etc., in addition to the several, there are color galvanized steel (colloquially referred to as color plates), printing coated galvanized steel, galvanized steel, PVC lamination and the like. In addition, use can be divided into general use, roof, building outer plate, structural, tile ridge board, stretching and deep drawing, etc. galvanized steel. Shenzhen high-grade galvanized sheet quality requirements include aspects of size, appearance, coating weight, chemical composition, shape, mechanical properties and packaging.