Galvanized steel pipe can be said to be a kind of building material widely used in machinery, construction, coal mine and other manufacturing industries. Generally speaking, galvanized steel pipe can be divided into cold galvanized pipe and hot-dip galvanized pipe. Everyone introduces what is hot-dip galvanized steel pipe and cold-dip galvanized steel pipe, and what is the difference between the two.

　　1. What is hot-dip galvanized pipe

　　The hot dip galvanized pipe makes the iron matrix react with the molten metal to produce an alloy layer, thereby combining the matrix and the coating. Hot-dip galvanizing requires pickling the steel pipe first to remove iron oxide on the surface of the steel pipe. After pickling, it is cleaned by zinc chloride aqueous solution or ammonium chloride or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent to the hot dip plating tank. Hot-dip galvanizing has the advantages of strong adhesion, uniform coating and long service life.

　　2. Cold galvanized pipe

　　Cold galvanizing is what we call electro galvanizing. The amount of galvanizing is very small. The corrosion resistance of cold galvanized pipes is much different than that of hot galvanized pipes. Therefore, cold galvanized pipes are not used in many construction projects. At present, the Ministry of Construction has officially stated that cold galvanized pipes with backward technology need to be eliminated. In the future, cold galvanized pipes are not allowed to be used as water and gas pipes.

　　Application of galvanized steel pipe:

　　Hot-dip galvanized steel pipes are widely used in construction, machinery, coal mines, chemicals, electric power, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery and other manufacturing industries. Galvanized steel pipes are welded steel pipes with hot-dip galvanized or electro-galvanized layers on the surface. Galvanizing can increase the corrosion resistance of the steel pipe and prolong the service life.

　　Galvanized pipes have a wide range of uses. In addition to line pipes for conveying water, gas, oil and other general low-pressure fluids, they are also used as oil well pipes and oil pipes in the petroleum industry, especially offshore oilfields, as well as oil heaters and condensate for chemical coking equipment. Pipes for coolers, coal-distilled wash oil exchangers, pipe piles for trestle bridges, pipes for support frames in mine tunnels, etc.

　　Therefore, when choosing galvanized steel pipes, everyone should focus on quality and choose high-quality galvanized steel pipes at a good price. The choice of pipe materials has a great impact on the quality and safety of construction projects. Choose reliable steel distributors, for example, you can choose Tianjin Huilai International Trade Co., Ltd is a large-scale comprehensive enterprise integrating steel sales, providing all domestic steel purchasers with integrated services of purchasing, sales and information.

　　For more information on steel, please contact Tianjin Huilai International Trade Co., Ltd.