What are the differences between tempered magnesium air duct and galvanized air duct?

There are differences between tempered magnesium air duct and galvanized air duct in the following aspects:

texture of wood

Tempered magnesium air duct: it is mainly made of inorganic cementing materials such as magnesium oxide and magnesium chloride, and reinforced materials such as glass fiber cloth, which are processed by special technology.

Galvanized air duct: galvanized steel plate is the main material, and there is a layer of zinc on the surface to prevent corrosion.

Performance characteristics

Fire resistance: both of them have certain fire resistance, but the tempered magnesium air duct belongs to incombustible materials, and the fire resistance rating is generally A, which is better in fire protection. The fireproof performance of galvanized air duct depends on the material and thickness of galvanized steel plate, which generally reaches B1 level or above.

Thermal insulation performance: Tempered magnesium air duct has low thermal conductivity and good thermal insulation performance, which can reduce heat loss. The thermal insulation performance of galvanized air duct itself is poor, so it is usually necessary to add additional thermal insulation layer to meet the thermal insulation requirements.

Corrosion resistance: Tempered magnesium air duct has good corrosion resistance and is not easily corroded by chemicals such as acid and alkali. The zinc layer on the surface of galvanized air duct can prevent rust to some extent, but in some harsh environments, such as high humidity and high salinity, the zinc layer may be destroyed, leading to the corrosion of air duct.

Strength: Tempered magnesium air duct has high strength and can withstand certain pressure and external impact. The strength of galvanized air duct can also meet the requirements of general ventilation system, but under the same conditions, its strength may be slightly lower than that of tempered magnesium air duct.

exterior

Tempered magnesium air duct: the surface is generally flat and smooth, and the color is mostly gray or beige.

Galvanized air duct: the surface is silver gray, with metallic luster and beautiful appearance.

processing technic

Tempered magnesium air duct: It is usually made by mold molding, pouring the mixed magnesium material into the mold, and then curing and demoulding. The machining process is relatively simple, but the precision of the mold is required.

Galvanized air duct: it needs cutting, bending, welding or bite connection, and the processing process is complicated, requiring professional equipment and technicians.

fix

Tempered magnesium air duct: It is relatively light in weight and convenient to install. Flange connection or plug connection can be adopted. However, in the installation process, attention should be paid to avoid scratching or damage to the surface of the air duct.

Galvanized air duct: It is heavy, requires hoisting equipment during installation, and has high technical requirements for installers. Flange connection or common-plate flange connection is mostly used for connection. During installation, it is necessary to ensure tight connection to prevent air leakage.

life

Tempered magnesium air duct: under normal use conditions, the service life is longer, which can reach more than 30 years.

Galvanized air duct: the service life is generally about 20 years, depending on the use environment and maintenance. If used in harsh environment and improperly maintained, its service life may be shorter.

Application scenario

Tempered magnesium air duct: suitable for places with high requirements on fire prevention, heat preservation and corrosion resistance, such as ventilation and air conditioning systems in high-rise buildings, hospitals, schools, shopping malls, underground parking lots, and some industrial workshops with special requirements.

Galvanized air duct: widely used in ventilation and air conditioning systems of general industrial and civil buildings, and some places with low requirements for corrosion resistance. In some places with high requirements on appearance, galvanized air ducts are often used because of their beautiful surfaces.

cost

Tempered magnesium air duct: the cost of raw materials is relatively low, but due to the limitation of processing technology and production scale, its price may be different due to regional and market supply and demand. Overall, the cost may be slightly higher than that of ordinary galvanized air ducts.

Galvanized air duct: the price is relatively stable and the market supply is sufficient. Its cost mainly depends on the price and processing cost of galvanized steel plate. In the case of mass production, the cost is relatively low.