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Galvanized steel sheet ducts are among the earliest types of ducts used in ventilation systems. They are made from galvanized steel sheets and are suitable for transporting general gases with low moisture content. However, they are prone to rust, lack thermal insulation and noise reduction capabilities, and require a longer installation and construction cycle due to their heavy nature and complex assembly process.
Inorganic FRP (Fiberglass Reinforced Plastic) ducts represent a more modern option. These ducts are made from glass fiber-reinforced inorganic materials, offering non-flammable and corrosion-resistant properties. Despite these advantages, they are heavy, hard yet brittle, and susceptible to deformation or cracking under their own weight. Additionally, they do not provide insulation or sound absorption, and their production and installation processes are also time-consuming.
Composite fiberglass ducts have gained popularity in recent years. They are typically manufactured using centrifugal fiberglass boards, with an inner layer of glass fiber cloth and an outer layer of moisture-proof aluminum foil. In some imported versions, the inner surface is coated with heat-sensitive black acrylic polymer, while the outer layer may be a thin fabric, aluminum foil, or kraft paper. After drying with a fireproof adhesive, the material is cut, grooved, and bonded to form the final duct structure. Depending on the duct size and air pressure, reinforcement measures are applied to ensure structural integrity.
Fiber fabric ducts, often referred to as bag ducts, fabric ducts, or fabric air distributors, are the latest innovation in air distribution systems. These flexible ducts are woven from special fibers designed to disperse air evenly through a unique combination of fiber penetration and jet orifice technology. They replace traditional ducts, dampers, and diffusers, providing a more efficient and aesthetically pleasing solution. Key benefits include even airflow distribution, high air volume without direct blowing sensation, anti-condensation properties, easy cleaning, and eco-friendly operation. They are lightweight, quiet, and simple to install, making them ideal for modern HVAC applications.
Shandong ventilation pipes are categorized based on their intended use and performance requirements.
1. **Air ducts for air purification and conditioning systems** typically use galvanized steel or stainless steel. Materials like FRP or composite materials are generally avoided if there is a risk of dust contamination during operation.
2. **Central air conditioning system ducts** commonly use galvanized steel or insulated color steel panels. Glass fiber reinforced plastic or composite materials may also be used depending on the application.
3. **Environmental control system ducts** often use galvanized steel or stainless steel. Other options such as plastic, glass fiber reinforced plastic, or composite materials can also be considered.
4. **Industrial ventilation system ducts** are typically constructed from steel plates or galvanized sheets. In certain cases, plastics, glass fiber reinforced plastic, or composite materials may be used. Note that FRP ducts are divided into organic and inorganic types, and fire protection requirements must be met according to design specifications—organic materials are usually prohibited.
5. **Special-purpose ducts**, such as those used in mining environments, include rubber-coated ducts and flame-retardant, antistatic plastic ventilation pipes. These must meet specific safety standards for fire resistance and static control.
The company specializes in the design, manufacturing, and installation of ventilation ducts. It has invested in advanced equipment such as automatic duct cutting lines, plasma cutters, shearing machines, biting machines, pressing machines, rounding machines, bending machines, and flange forming machines. With over ten sets of processing equipment, the company employs professional HVAC designers, skilled sheet metal workers, and experienced installation teams. All projects follow standardized procedures to ensure high-quality work and excellent customer satisfaction. The company has successfully completed numerous projects and continues to earn recognition for its reliable service and quality craftsmanship.