Why is hot-dip galvanizing material used for greenhouse frames?
Whether it is the simplest single-arch greenhouse, the large-span arch greenhouse, the solar greenhouse, the multi-span membrane greenhouse, or the multi-span glass greenhouse, the most important investment during the construction process is the steel frame of the greenhouse, which is also the most important load-bearing part.
The steel frame mainly serves the function of bearing weight and resisting wind and snow. The quality of the steel frame directly affects the lifespan of the greenhouse. Therefore, the steel frame of the greenhouse must be made of hot-dip galvanized materials and cannot use galvanized strip pipes just for the sake of cost. The main reasons for the wide application of hot-dip galvanized materials are as follows:
1. Corrosion Resistance: Hot-dip galvanizing is a process where steel is immersed in molten zinc, resulting in a zinc coating on the surface of the steel. This galvanizing layer forms a strong protective barrier on the steel surface, effectively preventing reactions between water, oxygen and other corrosive factors and the steel.
2. Durability: The durability of materials treated with hot-dip galvanization can be significantly enhanced, especially in variable outdoor weather conditions. Compared to cold-dip galvanized (electro-galvanized) steel, the zinc layer of hot-dip galvanized steel is thicker and has a stronger bond with the steel, thus ensuring a longer service life without rusting under the same conditions.
3. Comprehensive Protection: The hot-dip galvanizing process ensures that every corner of the material is coated with zinc, including sharp corners, sharp edges, and hidden holes. These are the areas that are most easily overlooked and where corrosion typically begins first.
4. Self-healing property: The zinc layer possesses a certain self-healing capability. Even if the coating is damaged, zinc can form an anti-corrosion oxide around the damaged area, thereby continuing to protect the steel from corrosion.
5. Economic Efficiency: Although the initial cost of hot-dip galvanizing may be higher than that of some other coatings, due to its long-term durability, the overall life-cycle cost (including maintenance, replacement, and repair costs) is usually relatively low.
6. Easy maintenance: Compared with steel that requires regular painting, hot-dip galvanized steel requires almost no maintenance, which can save long-term maintenance costs and labor.
7. Environmental adaptability: The greenhouse is exposed to the outdoor environment throughout the year, subject to the influence of natural conditions such as humidity, high temperature, and ultraviolet radiation. The hot-dip galvanized material can adapt to these conditions and maintain the integrity and functionality of the structure.
8. Environmental Protection: The hot-dip galvanizing hot-dip galvanized materials greenhouse process is more environmentally friendly than other protection methods such as painting. During the coating process, organic solvents may be used, and after evaporation, they may cause environmental pollution.
Therefore, hot-dip galvanized materials are an ideal choice for greenhouse construction. Their excellent durability and corrosion resistance can ensure the stability and durability of the framework structure, extend the service life of the greenhouse, reduce maintenance costs, and improve the usage effect of the greenhouse.
Single-arch greenhouses usually use hot-dip galvanized round pipes. For large-span arch greenhouses and solar greenhouses, hot-dip galvanized elliptical pipes are generally used. For multi-span membrane greenhouses and glass greenhouses, hot-dip galvanized square pipes and round pipes are commonly employed. Regardless of the size of the square pipes and round pipes used, it is essential to use national standard hot-dip galvanized materials. Only in this way can the constructed greenhouses be used for a long time, and they will be safer and more durable.
