英国1 English
  • 英国1 English

Hot-dip galvanizing pipe reacts molten metal with an iron matrix to produce an alloy layer, thereby combining the matrix and the coating. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an aqueous solution of ammonium chloride or zinc chloride or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to in a hot dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life. The steel pipe matrix undergoes complex physical and chemical reactions with the molten plating bath to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.

Editorial:2023-09-15

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Prev: Ground photovoltaic support foundation Drilled cast-in-place pile foundation: It is more convenient to form holes. The top elevation of the foundation can be adjusted according to the terrain. The top elevation is easy to control. The amount of concrete and steel bars is small, the amount of excavation is small, the construction is fast, and the damage to the original vegetation is small. However, there is on-site drilling and pouring of concrete, which is suitable for general fill soil, clay soil, silt soil, sand soil, etc. Steel spiral foundation: It is convenient to form holes, the top elevation can be adjusted according to the terrain, and is not affected by groundwater. It can be constructed as usual under winter climate conditions. The construction is fast, the elevation adjustment is flexible, and it has little damage to the natural environment. There is no filling and excavation work, which is harmful to the environment. There is little damage to the original vegetation and no site leveling is required. Suitable for deserts, grasslands, tidal flats, next door, frozen soil, etc. However, the steel used is relatively large and is not suitable for highly corrosive foundations and rock foundations. Independent foundation: the strongest water load resistance, flood and wind resistance. It requires the largest amount of reinforced concrete, requires a lot of labor, requires a large amount of earthwork excavation and backfilling, has a long construction period, and is highly destructive to the environment. It is rarely used in photovoltaic projects. Reinforced concrete strip foundation: This type of foundation form is mostly used in flat single-axis tracking photovoltaic supports with poor foundation bearing capacity, relatively flat sites, low groundwater levels, and high uneven settlement requirements. Prefabricated pile foundation: Prestressed concrete pipe piles with a diameter of about 300mm or square piles with a cross-sectional size of about 200*200 are driven into the soil. Steel plates or bolts are reserved on the top to connect to the front and rear columns of the upper bracket. The depth is generally less than 3 meters. Construction Relatively simple and fast. Bored cast-in-place pile foundation: The cost is low, but the soil layer requirements are high. It is suitable for silt soil with a certain density or plastic and hard plastic silty clay. It is not suitable for loose sandy soil layers. The soil quality Harder pebbles or gravel may be less likely to form holes. Steel spiral pile foundation: Special machinery is used to screw it into the soil. The construction speed is fast, no site leveling is required, no earthwork or concrete is required, and the vegetation on the site is protected to the maximum extent. The height of the bracket can be adjusted according to the terrain, and the spiral pile can be used twice.