Galvanized steel coils are steel coils that have been coated with a layer of zinc to protect the steel from corrosion This process is known as galvanization These coils are widely used in various industries including construction automotive and manufacturing due to their durability resistance to rust and versatility The zinc coating provides a protective barrier that helps prevent corrosion and increases the lifespan of the steel HS Code The Harmonized System HS code for galvanized steel coils typically falls under the following classification HS Code 7210 Flatrolled products of iron or nonalloy steel galvanized or plated with zinc Subcategories 721011 Hotrolled galvanized steel 721012 Coldrolled galvanized steel 721030 Other galvanized steel products Specifications Material Hotrolled or coldrolled steel Coating Type Zinc coating galvanized Coil Weight Typically ranges from 1000 kg to 10000 kg Coil Width 600 mm to 1500 mm depending on customer requirements Thickness 02 mm to 30 mm Zinc Coating Weight Measured in gm typically ranging from 60 gm to 275 gm higher zinc coating for more corrosion resistance Surface Finish Bright spangled or nonspangled depending on the galvanization process Edge Type Mill edge slit edge or trimmed edge Product Standard The quality and performance of galvanized steel coils are governed by international and national standards Common standards include ASTM A653A653M Standard specification for steel sheet zinccoated galvanized by the hotdip process JIS G3302 Japanese Industrial Standard for hotdip galvanized steel sheets EN 10346 European standard for continuously hotdip coated steel flat products ISO 3575 International standard for continuously hotdip galvanized steel sheets
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