Magnesium oxide composite duct is a duct system composed of two layers of high-strength inorganic materials and one layer of insulation material.

It has the following characteristics:
Light weight and high strength: Magnesium oxide composite ducts are lightweight, easy to handle and install, and have high strength to withstand large wind pressures.
Non combustible and good fire resistance: Magnesium oxide composite ducts are made of non combustible inorganic materials, with fire resistance reaching Class A of GB8624-1997 standard, and belong to non combustible materials.
Good sound insulation and thermal insulation effect: It has good sound insulation and thermal insulation performance, which can effectively improve indoor environment.
Moisture resistant, water-resistant, and long service life: It is not easy to rust or corrode in humid environments, and can maintain stable performance and extend service life.
Green and environmentally friendly, pollution-free: In the process of production, manufacturing, installation, and use, no substances that pollute the environment are produced, which belongs to green and environmentally friendly building materials.

Magnesium oxide composite ducts are applied in the fields of construction, decoration, fire protection, etc., and are particularly suitable for the following places:
Places with high pedestrian flow, such as restaurants, hotels, shopping malls, etc., can meet the high requirements for air quality and safety.
Damp environment: such as basements, civil air defense projects, mines, etc., can maintain stable performance in damp environments.
Industrial and Civil Buildings: Suitable for various types of industrial and civil buildings as well as other places with special requirements, such as hospitals, food processing plants, etc.

Fire rating: Class A non combustible material according to GB8624-1997 standard.
Bulk density: generally between 280~320kg/cubic meter (25mm thick).
Water absorption rate: less than 20.6%.
Thermal conductivity: less than 0.027W/(m · K) at room temperature of 24.5 degrees Celsius.
Bending strength: greater than 1.8MPa.
Corrosion resistance: After soaking in acid or alkali solutions, there is no significant change on the surface.
Ventilation pressure resistance: less than or equal to 3000Pa.

Wide applicability: Compared to traditional duct materials, Magnesium oxide composite ducts have a wider range of applications and can meet the needs of different places and environments.
High construction efficiency: The glass magnesium composite air duct is lightweight, easy to transport and install, and can also be connected without a flange to improve construction speed.
Energy saving and environmental protection: It has good insulation and sound insulation performance, which can reduce cold and heat losses and noise pollution. At the same time, as a green and environmentally friendly building material, it helps to save energy and reduce emissions.
Long service life: Not easy to rust or corrode in humid environments, able to maintain stable performance and extend service life.

Key points of construction:
Duct production: Special cutting machines are used for cutting to ensure a smooth cut; Use specialized adhesive for bonding to ensure bonding quality.
Duct reinforcement: Based on the width and usage pressure of the duct, reinforcement methods such as galvanized round steel or inner wall flange frames are used.
Installation of air ducts: Determine the form of air duct supports and hangers, install them according to regulatory requirements, and ensure the stability and reliability of the air ducts.
Maintenance points:
Regular inspection: Check whether the connection of the air duct is well sealed and whether there is any damage or leakage.
Cleaning and maintenance: Regularly clean the surface and interior of the air duct to prevent the accumulation of dust and dirt.
Anti corrosion treatment: In humid environments, regular anti-corrosion treatment should be carried out on air ducts to extend their service life.