Industrial Centrifugal Fans & Blowers Manufacturer
Nantong Nanyang Fan Manufacturing Co., Ltd. builds heavy-duty industrial centrifugal fans for air handling, material conveying, dust collection, high-temperature process gas circulation, and corrosive exhaust applications. Manufactured in strict accordance with ISO 9001 and ISO 14001 standards, our industrial blowers match specified operating points (airflow, static pressure, gas density, and temperature) for system integrators, EPC contractors, and OEM equipment engineers.
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Industrial Fan Selection Matrix
|
Fan Type / Impeller Style |
Airflow Range (m3/h) |
Static Pressure (Pa) |
Temp Range (Deg C) |
Gas Medium & Dust Loading |
Primary Drive Arrangement |
|
Backward Curved / Inclined |
1,000 - 450,000 |
500 - 12,000 |
Up to 450 Deg C |
Clean air, low-dust gases (< 100 mg/m3). High peak static efficiency up to 85%. |
Direct / Belt / Coupling |
|
Radial Blade (Heavy Duty) |
500 - 220,000 |
2,000 - 25,000 |
Up to 800 Deg C |
High-dust loading, sticky particles, pneumatic abrasive material transport. Self-cleaning wheel profile. |
Direct / Coupling |
|
Forward Curved |
1,500 - 120,000 |
200 - 3,500 |
Up to 250 Deg C |
Clean air ventilation, compact HVAC, space-constrained installations requiring high volume at lower speeds. |
Direct / Belt |
|
High-Pressure Blower |
300 - 60,000 |
5,000 - 30,000 |
Up to 500 Deg C |
Combustion air, fluid bed aeration, gas boosting, seal air systems. |
Direct / Speed-increasing Coupling |
|
Corrosion-Resistant (FRP/Stainless) |
800 - 180,000 |
300 - 8,000 |
Up to 180 Deg C |
Chemical vapors, acid fumes (HCl, H2SO4), bio-gas, wet scrubbers. |
Direct / Belt |
Materials & Structural
Carbon Steel: Q235B, Q355B/C/D for standard temperature and structural ventilation requirements.
Stainless Steel: 304, 316L, 2205 Duplex, 2507 Duplex for corrosive process gases or sanitary process air.
Nickel Alloys: Hastelloy C-276, Inconel 625 for severe acid fume exhaust and extreme chemical environments.
Specialty Plastics: FRP (Fiber Reinforced Plastic) and PP (Polypropylene) housing options for wet chemical scrubbing.
Casing Gauge: Continuously welded 4 mm to 12 mm heavy-gage steel casings with structural channel stiffeners to resist pulsation and distortion under maximum static pressure loads.
Technical Specifications
|
Parameter |
Standard Range / Specification |
|
Airflow Capacity |
500 m3/h to 500,000 m3/h (300 CFM to 295,000 CFM) |
|
Static Pressure |
Up to 30,000 Pa (120 in. wg) single-stage |
|
Operating Temperature |
-40 Deg C to +800 Deg C (-40 Deg F to 1472 Deg F) |
|
Wheel Diameter |
250 mm to 3,150 mm (10 in. to 124 in.) |
|
Dynamic Balance Class |
ISO 1940-1 Grade G2.5 standard (Grade G1.0 available upon request) |
|
Welding Standard |
AWS D1.1 / EN 15085 full-penetration structural welds; NDT testing (PT/MT/UT) applied to high-stress impeller seams |
|
Motor Compatibility |
IEC / NEMA frame motors, TEFC, Explosion-Proof (Ex d IIB/IIC, ATEX Zone 1/2, Zone 21/22), IP55/IP65, IE3/IE4 premium efficiency |
|
Driven Configuration |
Arrangement 1 (Belt drive, cantilever), Arrangement 4 (Direct drive, wheel on motor shaft), Arrangement 8 (Direct drive via flexible coupling with pedestal), Arrangement 9 (Belt drive, motor mounted on side) |
Applications by Industry
Boiler & Thermal Power Plants
Induced Draft (ID) fans, Primary Air (PA) fans, and Forced Draft (FD) fans for biomass, coal, and waste-to-energy boilers.
Cement & Mineral Processing
Raw mill exhaust fans, kiln inlet/outlet fans, cooler exhaust fans, and baghouse suction blowers operating under heavy dust loading.
Chemical & Petrochemical
Acid gas scrubbers, VOC incinerator exhaust, process reactor gas circulation, and explosion-proof vapor extraction.
Pneumatic Conveying & Bulk Handling
High-pressure material handling blowers for plastic pellets, cement, grain, wood chips, and sawdust transport.
Steel & Metallurgical Plants
EAF dust collection, sintering machine exhaust, quenching air systems, and furnace cooling fans.
Environmental & Wastewater Treatment
Odor control scrubbers, bio-filter exhaust systems, and municipal waste incinerator flue gas treatment.
Custom Fan Engineering & Retrofit Capabilities
Finite Element Analysis (FEA) & Computational Fluid Dynamics (CFD)
Fluid Dynamic Modeling: CFD simulation optimizes blade geometry, scroll casing expansion, and inlet cone clearance to maximize static pressure efficiency and prevent flow separation.
Structural Mechanics: FEA stress analysis verifies impeller natural frequencies, resonance margins, and structural integrity under maximum operating RPM and thermal expansion conditions.
Fan Replacement & Drop-In Retrofit
Field measurement verification from existing customer bolt patterns, inlet/outlet flange dimensions, and shaft center heights.
Reverse engineering of damaged or obsolete OEM impellers to match original system performance while improving structural reinforcement and wear life.
Manufacturing & Quality Control
Our manufacturing facility covers CNC laser cutting, automated plate rolling, robotic welding, thermal stress-relieving furnaces, and full-scale dynamic balancing setups.
Raw Material Inspection & UT Testing
• CNC Laser Cutting & Automated Beveling
• Robotic & AWS Certified Manual Welding
• Thermal Stress Relieving (Large Impellers)
• Two-Plane Dynamic Balancing (ISO G2.5)
• Full Assembly & Factory Acceptance Test (FAT)
Material Traceability: Mill Test Certificates (MTC) according to EN 10204 3.1 provided for all plate materials, shafts, and structural steel.
Non-Destructive Testing (NDT): Ultrasonic Testing (UT) on forged shafts; Dye Penetrant Testing (PT) and Magnetic Particle Testing (MT) on impeller blade-to-backplate welds.
Two-Plane Dynamic Balancing: Every impeller undergoes dynamic balancing on computerized balancing machines to ISO 1940 Grade G2.5 before and after final assembly.
Factory Acceptance Testing (FAT): Mechanical run-tested at full operating speed for a minimum of 2 hours. Vibration velocity (mm/s RMS), bearing temperature rise, noise levels (dB(A)), and motor electrical current are recorded and included in the shipment documentation.
Packaging & Project Support
Export Packaging: Heavy-duty timber cases compliant with ISPM 15 heat treatment standards. Internal vacuum sealing, VCI anti-corrosion wrap, and silica gel desiccant protection for long sea freight transit.
Rigging & Lifting: Reinforced lifting lugs and skid bases designed for crane rigging and container loading/unloading without frame deflection.
Project Documentation Package:
General Arrangement (GA) 2D Drawings (DWG/PDF) and 3D STEP Models for piping/ductwork integration.
Fan Performance Curves showing Airflow vs. Pressure, Shaft Power (kW), and Efficiency across the operating range.
Operation & Maintenance (O&M) Manuals in English.
FAT Inspection & Dynamic Balancing Reports.
Welding Inspection Reports & Material Test Certificates.
FAQ
Request a Fan Selection & Engineering Support
Need a technical quotation, CAD drawing, or fan selection calculation for your project? Contact our engineering team with your operating specifications:
E-mail: nyfji@126.com
Direct Phone / WhatsApp: +86 186 6290 3785
Manufacturing Location: North End of Jiuwei Port Bridge, Nantong City, Jiangsu Province, China
Deliverables Provided with Quotation: Fan Performance Curves, 2D/3D GA Drawings, Component Data Sheets, and Itemized Commercial Proposals within 24 hours.
As one of the leading centrifugal fan manufacturers and suppliers in China, we also support customized service with low price. Please feel free to buy discount centrifugal fan made in China here from our factory. For quotation, contact us now.
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