Hot dip galvanized steel pipe is a hot-dip galvanized steel pipe made by spirally bending strips or coils and using double-sided submerged arc automatic welding for inner and outer seams. It can be widely used in construction due to the following reasons , Machinery, coal mines, chemicals, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery and other manufacturing industries. Let's talk about the advantages and disadvantages of hot dip galvanized steel pipes.

　　The advantages of hot dip galvanized steel pipe

　　1. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The matrix of the hot-dip galvanized steel pipe undergoes a complex physical and chemical reaction with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, its corrosion resistance is strong.

　　2. As long as the forming angle is changed, steel pipes of various diameters can be produced from strip steel of the same width, which is easy to adjust.

　　3. Because it is continuous bending, the length of the spiral tube is not limited, and the length can be set at will.

　　4. The spiral shape of the weld is evenly distributed on the circumference of the spiral tube, so the spiral tube has high dimensional accuracy and strong strength.

　　5. It is easy to change the size, suitable for the production of small batches and multiple varieties of spiral pipes. The weld seam of the hot dip galvanized steel pipe is longer than that of the straight seam pipe of the same specification. With the same wall thickness, the hot dip galvanized steel pipe bears the greatest pressure.

　　6. Welded steel pipe with hot dip galvanized or electro-galvanized layer on the surface of galvanized steel pipe. Galvanizing can increase the corrosion resistance of the steel pipe and prolong the service life.

　　7. Welded steel pipe with hot-dip galvanized or electro-galvanized layer on the surface of galvanized steel pipe. 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.

　　The disadvantages of hot dip galvanized steel pipe

　　The defect of the weld of the hot dip galvanized steel pipe is "oblique defect". In the process of use, the main stress direction of the steel pipe, that is, the equivalent defect length in the axial direction of the steel pipe is smaller than that of the straight seam pipe; secondly, because the pipeline steel is a rolled steel plate, the impact toughness has a larger anisotropy, and it is rolled The CVN value in the direction can be 3 times higher than the CVN value perpendicular to the rolling direction.

　　The advantages and disadvantages of hot dip galvanized steel pipes can only be known by comparison. After hot dip galvanized steel pipes are used, they can be detected through various data indicators, so here can only provide you with the theoretical advantages and disadvantages of hot-dip galvanized steel pipes, everything The main thing is feedback provided by real users.

　　The above is all about the advantages and disadvantages of hot dip galvanized steel pipes.