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1. Hot-Dip Galvanizing This method entails cleaning the iron or steel surface and then immersing it in a bath of molten zinc at approximately 450 degrees Celsius. Once coated, the metal is removed and allowed to cool, resulting in a thick, adherent zinc layer that forms various compounds with the underlying iron. This method is known for producing robust coatings suitable for heavy-duty applications.
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Once the wire is drawn, it undergoes cleaning to remove any impurities or oxidation that may have occurred during the drawing process. After cleaning, the wire is then subjected to the galvanization process, where it is coated with zinc. Factories ensure that the coating adheres properly, providing excellent corrosion resistance.
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By 2010, China had firmly established itself as one of the world's leading suppliers of corrugated metal roofing. The country's robust industrial base, combined with an abundance of raw materials, enabled manufacturers to produce high-quality metal roofing at competitive prices. A significant number of suppliers emerged during this period, offering a variety of products that catered to domestic and international markets.

Hand-forged ornamental iron was the first type of steel fencing dating back to the early 1800’s. Individual parts were hand-forged in iron shops, where the steel was heated at high temperatures and formed into shape by a black smith. Forged metal is extremely durable but due to the process involved of forging each part takes a considerable amount of time to make which drives the cost up. Today, this type of fencing is extremely rare with very few craftsmen making this type of ornamental fencing.