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Library: Ø25–1,000 mm, single units up to about 52,000 m³/h — larger duties go straight to an engineer. Prefer to talk it through? Send your specs to an engineer

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  • Yuyao, Ningbo
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Product certificates cover only the models listed on each document — ask which ones apply to your model. ISO certificates cover management systems, not products. Declaration of Conformity for your model and destination on request.

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Test & release at LONGWELL

Specified and drawn by LONGWELL, built to our drawings by qualified partner factories, inspected and released to LONGWELL standards.

  • Wind tunnel · AMCA 210 method
  • Semi-anechoic room · sound power testing
  • Outgoing sampling to AQL 2.5
  • Test records retained for 5 years

How ordering works

  1. Spec check duty point & drawings
  2. Samples 1–3 days (stock models), fee credited to first order
  3. Validation on your bench
  4. Order T/T 30/70 (first order)
  5. Production & release 15–30 days, partner factory
  6. Shipping & after-sales FOB · CIF · DDP
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Current book for Industrial Centrifugal Fans

Industrial Centrifugal Fans

Longwell Centrifugal Blowers: High-Performance Airflow for Industrial Applications

The industrial fan blower series is DIDW centrifugal fan with forward curved & backward curved impellers. The fans are suitable for supply and exhaust applications in commercial, process and industrial HVAC systems.

Longwell centrifugal blowers are designed for durability, efficiency, and versatility across a range of industrial and commercial settings. With models tailored for precise airflow and pressure needs, Longwell’s blowers provide effective solutions for HVAC, manufacturing, and large facilities.

Norminal specifications data :

  • Impeller Diameter: Available from 280mm up to 1600mm, suitable for various airflow requirements and up to 18 inches in size.
  • Impeller Type: Choice of backward-curved type blades or forward-curved blades for optimized airflow.
  • Blade Type: Options include standard blades or advanced air-foil type blades for enhanced performance.
  • Air Volume Range: Delivers air volumes from 1000 m³/h up to 300,000 m³/h to meet diverse ventilation needs.
  • Static Pressure Range: Handles static pressures up to 3000 Pa, suitable for high-pressure applications.
  • Drive Type: Available in belt-driven with speed modulation or direct-driven configurations to suit different control requirements.
  • Noise Level: Operates at a typical noise level of 70–80 dB, depending on the installation environment.
  • Construction Material: Constructed from lightweight aluminum or reinforced steel with optional acoustic treatment for reduced noise output.

Main applications for LONGWELL centrifugal blowers:

Small commercial HVAC and compact industrial areas;

High-pressure HVAC, clean rooms, and exhaust systems;

Offices, labs, schools, and other quiet workspaces;

Noise-sensitive facilities, data centers, and industrial plants.

The advantages of LONGWELL centrifugal fans :

making them a preferred choice in various industrial applications:

  • Energy Efficiency: Designed to minimize power consumption while delivering optimal airflow for energy-saving operation.
  • Durability: Constructed with high-quality materials to ensure long-lasting performance, reducing the need for frequent replacements.
  • Versatility: Ideal for a wide range of applications, from small HVAC systems to large industrial facilities, offering flexible installation options.
  • Low Maintenance: Engineered for high reliability, resulting in reduced upkeep and lower operational costs over time.
  • Noise Reduction: Equipped with sound-insulating features in many models, ensuring quiet operation suited for noise-sensitive environments.

The Banefits of using longwell centrifugal fans:

Utilizing Longwell industrial centrifugal fans comes with numerous benefits that enhance operational efficiency and performance:

  • Improved Air Quality: Efficient airflow helps maintain consistent air quality in industrial environments, reducing contaminants and promoting a healthier workspace.
  • Cost Savings: Energy-efficient designs contribute to lower electricity bills and reduced overall operational costs, supporting a cost-effective solution.
  • Custom Solutions: Longwell offers a variety of models tailored to specific airflow needs, ensuring optimal performance for diverse applications.
  • Enhanced Productivity: Consistent and reliable airflow promotes better working conditions, boosting overall productivity in facilities.
  • Reduced Downtime: Durable construction and low maintenance requirements lead to fewer breakdowns, ensuring continuous operation and minimizing interruptions.

Choose Longwell for Reliable Industrial Airflow Solutions

Longwell have established their reputations through a commitment to quality, reliability, and energy-efficient performance. With fan blowers tailored to meet specific airflow needs, these brands provide solutions that deliver superior airflow control, lower energy costs, and reduced maintenance requirements across various commercial and industrial sectors.