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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 conveying general gases with low moisture content. However, they are prone to rust, lack thermal insulation and noise reduction properties, and typically 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 alternative. These ducts are made from glass fiber-reinforced inorganic materials, offering fire resistance and corrosion resistance. However, they are heavy, hard yet brittle, and susceptible to deformation or cracking under their own weight. Additionally, they do not provide insulation or sound-dampening capabilities, and both production and installation can be time-consuming.
Composite fiberglass ducts have become popular in recent years. They are manufactured using centrifugal fiberglass boards, with an inner layer of glass fiber cloth and an outer layer of moisture-proof aluminum foil cloth. Some imported versions feature heat-sensitive black acrylic polymer coatings inside and thin fabric, aluminum foil, or kraft paper on the outside. After drying with a fire-resistant adhesive, these materials are cut, grooved, and bonded into the final duct shape. Depending on the duct size and air pressure, reinforcement measures are applied as needed to ensure structural integrity.
Fiber fabric ducts, often referred to as "bag ducts" or "fabric air distributors," are the latest innovation in air distribution systems. Made from special fibers designed for air dispersion, they replace traditional ducts, dampers, diffusers, and insulation materials. These flexible systems deliver air through a unique combination of fiber penetration and jet orifice technology, ensuring even air distribution without the uncomfortable blowing sensation.
Fabric ducts offer numerous advantages: they provide surface airflow with large air volume, ensure uniform air distribution, prevent condensation, are easy to clean and maintain, and are environmentally friendly. Their aesthetic design allows for a wide range of colors and customization options, making them ideal for high-end applications. They are lightweight, reducing roof load significantly, operate quietly, improve indoor air quality, and simplify installation, shortening the overall project timeline. Additionally, they are flexible, reusable, and cost-effective in the long run, offering excellent value for money.
Shandong ventilation pipe material grades are generally determined based on usage requirements.
1. Air ducts for purifying air conditioning systems: Galvanized sheet or stainless steel. (FRP and composite materials that may be contaminated by dust sources during use are prohibited.)
2. Air ducts for central air conditioning systems: Galvanized sheet or color steel insulation board. (Glass fiber reinforced plastic or composite materials can be used.)
3. Air ducts for environmental control systems: Galvanized sheet or stainless steel. (Plastic, glass fiber, or composite materials can also be used.)
4. Industrial ventilation ducts: Steel plates or galvanized sheets. (Polyethylene or PVC pipes, plastic, glass fiber, or composite materials can be used.) Note: FRP ducts are divided into organic and inorganic types, and fire protection standards must be followed according to design specifications. Organic materials should be avoided.
5. Air ducts for special environments: Rubber-coated mine ducts or flame-retardant plastic ventilation pipes. (These must meet flame-retardant and anti-static safety requirements for mining applications.)
The company specializes in the design, production, and installation of ventilation ducts. It has introduced advanced automated cutting lines, plasma cutters, shearing machines, biting machines, pressing machines, rounding machines, bending machines, and flange forming machines. With over ten sets of specialized ventilation equipment, the company employs professional HVAC designers, experienced sheet metal workers, and skilled installation teams. The company maintains standardized procedures, ensures high-quality engineering, and delivers excellent service. Completed projects have received positive feedback from clients. 