HOT GALVANIZED STEEL PIPE

Galvanized steel pipe also known as galvanized steel, Hot galvanized steel pipe and electro-galvanized are two kinds of hot dip galvanized galvanized thickness, having a uniform coating, strong adhesion, long life and other advantages. Electric galvanized low cost, surface is not very smooth, corrosion resistance tube itself much worse than the hot-dip galvanizing.

Hot galvanized steel pipe is molten metal and reacting the iron matrix alloy layer, so that the substrate and coating combination of both. Hot-dip galvanizing is the first steel pickling, in order to remove the steel surface of the iron oxide, after pickling, a mixed aqueous solution tank cleaning by aqueous ammonium chloride or zinc chloride or ammonium chloride and zinc chloride, and then into hot-dip plating bath. HDG has a uniform coating, strong adhesion, long life and other advantages.

Hot dip galvanized steel pipe substrate

Galvanized pipe with the molten bath complicated physical and chemical reactions, the formation of corrosion-resistant compact layer of zinc-iron alloy. Alloy layer and the layer of pure zinc, steel base blend. Therefore, its strong resistance to corrosion.