Galvanized sheet production and processing methods

With the acceleration of industrialization in our country, galvanized sheet production in China is increasing year by year, but at the same time our imports of galvanized sheet increased year by year. Which grew even greater than the increase in our production. According to statistics, our galvanized steel consumption of about 5.27 million tons in recent years. Since 1999, imports of galvanized sheet exceeded production, domestic self-sufficiency rate of less than 50%, and on a decreasing trend. In recent years, galvanized sheet production in China increased to produce more mainly Galvanized Pipe, 1998-2002, hot-dip galvanizing sheet production increased from 970,000 tons to 2.2 million tons. While the volume of imports grew even faster, increased from 370,000 tons of 98 to 02 1.56 million tons. Apparent consumption increased from 1.32 million tonnes to 3.67 million tons. In 2002, hot galvanized domestic products of self-sufficiency is about 60%, when Beijing hot galvanized plate manufacturers of domestic production and imports have increased over the previous year, in particular imports rose even more sharply, mainly due to color coated sheet production with increased demand for thin-gauge hot-dip galvanized sheet, domestic self-sufficiency rate has declined.

Galvanized sheet what kinds there are in it? First of all, according to the production and processing methods can be divided into the following categories: 1, hot-dip galvanized steel. The sheet into molten zinc bath, glue a layer of zinc on the surface of steel sheet. Mainly through continuous galvanizing process, namely continuous immersion in rolled steel plates in a molten zinc bath made of galvanized steel. 2, alloyed zinc-plated steel. This plate is also produced by hot dip method, but after the market, once it is heated to 500 degrees Celsius, to produce zinc and iron alloy coating. The galvanized steel has good paint adhesion and solderability. 3, electro-galvanized steel sheet. Used electroplating method to make this kind of galvanized steel with good machinability. But to a thin coating, corrosion resistance than the hot-dip galvanized plate. 4 poor, single and double sided plated galvanized steel. Single-sided galvanized steel, that is only in a galvanized product. In welding, coating, finishing, processing, and so on, have better adaptability than two-sided galvanized steel. To overcome the shortcomings of one side without zinc, another one on the other side coated with a thin layer of zinc galvanized sheet, namely poor double sided galvanized sheet. 5、Square Pipe。 It is made of zinc and other metals such as lead, zinc alloy and composite coatings made from steel plates. This plate has excellent rust
Second, on the production and processing methods can be divided into the following categories: 1, hot-dip galvanized steel. The sheet into molten zinc bath, glue a layer of zinc on the surface of steel sheet. Mainly through continuous galvanizing process, namely continuous immersion in rolled steel plates in a molten zinc bath made of galvanized steel. 2, alloyed zinc-plated steel. This plate is also produced by hot dip method, but after the market, once it is heated to 500 degrees Celsius, to produce zinc and iron alloy coating. The galvanized steel has good paint adhesion and solderability. 3, electro-galvanized steel sheet. Used electroplating method to make this kind of galvanized steel with good machinability. But to a thin coating, corrosion resistance than the hot-dip galvanized plate. 4 poor, single and double sided plated galvanized steel. Single-sided galvanized steel, that is only in a galvanized product. In welding, coating, finishing, processing, and so on, have better adaptability than two-sided galvanized steel. To overcome the shortcomings of one side without zinc, another one on the other side coated with a thin layer of zinc galvanized sheet, namely poor double sided galvanized sheet. 5, alloy, composite galvanized steel. It is made of zinc and other metals such as lead, zinc alloy and composite coatings made from steel plates. This plate has excellent rust resistance and excellent coating performance.
In addition to these five areas, and Welded Steel Pipe, printing finishing galvanized, PVC-laminated galvanized sheet steel, etc. But by far the most commonly used for hot-dip galvanized steel sheet. www.denuoxinsteel.com

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