How many kinds of galvanized steel pipe?

How many kinds of galvanized steel pipe?

 

Galvanized steel pipe also divided into hot galvanized steel pipe and cold galvanized steel pipe Hot-Dip Galvanized steel pipe: Hot-dip galvanized pipe is to make molten metal and iron matrix reaction to produce alloy layer, so that the substrate and the coating of the combination of the two. Hot-Dip Galvanizing is the first steel pipe pickling, in order to remove iron oxide on the surface of the steel tube, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed water solution trough cleaning, and then into the hot dip bath. Hot-Dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel tube has a complex physical and chemical reaction with molten plating solution, which forms a close zinc-iron alloy layer with corrosion-resistant structure. The alloy layer blends with the pure zinc layer and the steel tube matrix.

Therefore, its corrosion resistance is strong. 3. Cold Galvanized Steel Pipe: Cold galvanized pipe is electroplating zinc, zinc plating is very small, only 10-50g/m2, its own corrosion resistance of specific heat galvanized tube a lot of difference. Regular galvanized pipe manufacturers, in order to ensure the quality, most of the use of electroplating zinc (cold plating). Only small companies with small size and outdated equipment adopt zinc electroplating, but their prices are also relatively cheap. At present, the Ministry of Construction has officially below, the elimination of technical backward cold galvanized pipe, the future is not allowed to use cold galvanized pipe for water, gas pipe. The galvanized coating of cold galvanized steel pipe is electroplated layer, and the zinc layer is separated from the steel tube matrix.

 

The zinc layer is thin, the zinc layer is simply attached to the steel tube substrate, easy to fall off. So its corrosion resistance is poor. In new residential buildings, the use of cold galvanized steel pipe is prohibited as a water supply pipe, API American Standard galvanized steel pipe, the United States standard hot galvanized seamless steel pipe, galvanized steel pipe not only in the production time to pay attention to the relevant production process, but also in the later processing and processing technology to do accurate, so you can add to the production of double insurance,

 

Galvanized steel pipe is not only in the appearance of the quality of a higher level, has become a strong application capacity of reliable building materials. Galvanized steel Pipe As a new type of pipe in the liquid and solid-state energy transmission process played a very important role and value, especially it has a very high strength and good wear resistance, we can use more rest assured that the use of longer life, Galvanized steel pipe is the molten metal state of zinc and iron-based body reaction and produce alloy layer, so that the substrate and coating the combination of the two, so that more than ordinary steel pipe has a certain advantage, because the process is relatively complex, adding zinc elements, so that the plastic pipe more good, and zinc corrosion resistance, especially chemical corrosion is very good. Hot-Dip galvanizing process, is the first steel pipe in acid pickling, the purpose is to remove iron oxide on the surface of the steel tube, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed water solution trough cleaning, and then into the hot-dip bath. Hot-Dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.