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Classification Of Galvanized Steel Jun 08, 2017

    Galvanized steel, refers to the ordinary carbon construction steel through galvanized processing can effectively prevent corrosion of steel rust and thus extend the life of steel, including galvanized zinc and hot dip galvanized. Commonly used in building facades, such as glass curtain wall, marble curtain wall, aluminum curtain wall to do the column and the force of materials, or for outdoor telecommunications towers, highways and other open-air construction steel called galvanized steel, galvanized galvanized and heat Dip galvanized.Galvanized Steel

    The hot-dip galvanizing pipe is a method in which a molten metal is reacted with an iron matrix to produce an alloy layer, so that both the substrate and the plating layer are combined. Hot-dip galvanizing is the first pickling of the steel pipe, in order to remove the iron oxide surface of the steel pipe, pickled, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed water tank cleaning, and then into Hot dip bath.

    Hot galvanized with uniform coating, strong adhesion, long life and other advantages. Hot-dip galvanized steel pipe matrix and molten bath complex physical and chemical reactions, the formation of corrosion-resistant structure of a close zinc alloy layer. Alloy layer and pure zinc layer, steel pipe body integration. So its strong corrosion resistance.

    Cold galvanized pipe is galvanized, very little galvanized, only 10-50g / m2, its own corrosion resistance than hot galvanized pipe a lot worse. Regular galvanized pipe manufacturers, in order to ensure quality, most do not use electro-galvanized (cold plating).Galvanized Steel

   Only those small size, old equipment, small businesses using galvanized, of course, their prices are relatively cheap. The current Ministry of Construction has officially below, out of the cold behind the cold galvanized pipe, the future is not allowed to use cold galvanized pipe for water, gas pipe. Galvanized galvanized steel galvanized layer is the electroplating layer, zinc layer and the steel pipe matrix independent layer. Zinc layer is thin, zinc layer simply attached to the steel pipe matrix, easy to fall off. So its poor corrosion resistance. In the new residential, the use of cold galvanized steel pipe as a water supply pipe.Galvanized Steel