Description
Oblique Flow Pipeline Fan
Engineered for seamless inline duct integration. The oblique flow design bridges the gap between axial and centrifugal fans, delivering high-efficiency volumetric exchange with elevated static pressure. Ideal for long-distance ventilation in complex industrial and commercial pipelines.
Key Technical Features
Built for rigorous industrial safety, low-noise efficiency, and reliable long-distance duct ventilation.
Thickened Casing
Heavy-duty carbon steel casing provides exceptional structural integrity for high-pressure inline applications.
Pure Copper Motor
Highly efficient copper-core motor ensures continuous, low-temperature operation with maximum power.
Sturdy Mounting
Integrated rigid base mounting bracket eliminates vibration and secures the fan firmly to structures.
Smooth Operation
Oblique flow aerodynamics combined with precision balancing results in a remarkably low acoustic footprint.
Technical Specifications
LWSJG / LWSJGFR Series dimensional parameters and performance data.
Dimensions (mm) - Selected Models
| Model | D1 (Inner Dia) | D4 (Outer Dia) | L (Length) | M1 (Base Length) | Weight (kg) |
|---|---|---|---|---|---|
| LWSJG/SJGFR-2A | 200 | 375 | 290 | 260 | 12.7 |
| LWSJG/SJGFR-3A | 300 | 522 | 410 | 365 | 25.0 |
| LWSJG/SJGFR-4A | 400 | 612 | 550 | 565 | 45.0 |
| LWSJG/SJGFR-5A | 500 | 810 | 690 | 642 | 108.0 |
| LWSJG/SJGFR-6A | 600 | 910 | 825 | 765 | 210.0 |
| LWSJG/SJGFR-8A | 800 | 1204 | 1100 | 1040 | 318.0 |
Performance Data - Selected Models
| Model | Speed (r/min) | Matching Motor (kw) | Flow Rate (m³/h) | Total Pressure (Pa) | Noise dB(A) |
|---|---|---|---|---|---|
| LWSJG/SJGFR-2A-0.09-4P-1-001 | 1450 | 0.09 | 725 - 275 | 45 - 103 | ≤58 |
| LWSJG/SJGFR-3A-0.37-4P-1-001 | 1450 | 0.37 | 2500 - 900 | 100 - 240 | ≤61 |
| LWSJG/SJGFR-4A-1.1-4P-1-002 | 1450 | 1.10 | 5910 - 1500 | 220 - 420 | ≤65 |
| LWSJG/SJGFR-5A-3-4P-1-002 | 1450 | 3.00 | 7920 - 3200 | 440 - 750 | ≤69 |
| LWSJG/SJGFR-6A-5.5-4P-1-002 | 1450 | 5.50 | 13800 - 5800 | 630 - 1090 | ≤75 |
| LWSJG/SJGFR-8A-5.5-6P-1-001 | 960 | 5.50 | 23700 - 9000 | 440 - 860 | ≤74 |
Thickened Carbon Steel Casing
Pipeline fans must endure continuous internal air pressure and external environmental stresses. The LWSJG series features a main casing constructed from premium, thickened carbon steel.
This rugged cylindrical housing is precisely formed and welded to prevent any structural deformation under heavy loads. Finished with a highly durable anti-corrosion coating, it guarantees an extended operational lifespan in demanding commercial and industrial duct systems.
- Heavy-duty steel wall — Prevents expansion or warping under pressure
- Precision welded — Ensures absolute airtightness in the pipeline
- Anti-corrosion finish — Extends durability in varied environments
Thickened Steel Fan Blades
The core of the oblique flow performance lies in its uniquely shaped impeller. Crafted from thickened steel, these blades are specifically pitched to accelerate air diagonally.
This hybrid aerodynamic design compresses the air as it moves through the casing, overcoming high duct resistance without sacrificing volumetric capacity. Each impeller undergoes strict dynamic balancing to ensure it runs smoothly and vibration-free at high RPMs.
- Oblique flow aerodynamics — High volume meets high static pressure
- Thickened steel construction — Resists bending under heavy load
- Dynamically balanced — Prevents mechanical resonance
Pure Copper Core Motor
Reliability is critical for ventilation systems embedded deep within building infrastructure. The LWSJG utilizes a high-power industrial motor equipped with thickened pure copper-core coils.
This design provides superior electrical conductivity, translating electrical energy into rotational force with minimal thermal loss. The resulting low temperature rise ensures the motor can safely operate 24/7, driving continuous ventilation for large facilities.
- Premium copper coils — Highly efficient energy transmission
- Low temperature rise — Safe for continuous 24/7 operation
- Industrial durability — Vastly reduces maintenance downtime
Powerful Airflow Performance
The combination of a powerful copper motor and an oblique flow impeller allows the LWSJG series to deliver exceptional ventilation performance. It easily pushes massive volumes of air through extended lengths of complex ductwork.
This makes it highly effective at rapidly extracting stale air, smoke, or humidity, or supplying fresh outdoor air deep into the core of large commercial spaces and underground facilities.
- High static pressure — Overcomes resistance in long pipeline layouts
- Rapid air replacement — Efficiently clears smoke and odors
- Consistent output — Maintains steady airflow across the duct network
Low-noise Smooth Operation
HVAC systems in commercial settings like hotels and museums demand a minimal acoustic footprint. The LWSJG series is aerodynamically optimized to reduce air turbulence as it enters and exits the casing.
Coupled with precisely balanced rotating components and a rigid outer shell that absorbs vibration, the fan guarantees whisper-quiet and incredibly smooth operation, preserving the comfort of the building's occupants.
- Aerodynamic casing — Smooths airflow to reduce wind noise
- Vibration absorption — Rigid steel structure prevents rattling
- Acoustic comfort — Ideal for noise-sensitive commercial environments
Sturdy Base Mounting for Stability
Secure installation is paramount for heavy inline fans. The LWSJG is designed with a fully integrated, sturdy base mounting bracket made from thick gauge steel.
This allows the fan to be firmly bolted to floors, ceilings, or structural beams, completely securing the unit against rotational torque and preventing any transfer of vibration into the surrounding pipeline or building structure.
- Integrated base bracket — Ensures quick, highly secure installation
- Anti-vibration mount — Prevents structural resonance
- Versatile positioning — Mountable on floors, walls, or suspended structures
Wide Applications
A versatile, high-pressure pipeline fan ideal for long-distance ventilation in commercial and industrial structures.
Industrial & Mining Enterprises
Provides powerful, high-pressure exhaust to clear dust and fumes through long factory pipelines.
Hotels
Delivers steady, whisper-quiet fresh air supply and exhaust, ensuring maximum guest comfort.
Restaurants
Easily overcomes duct resistance to rapidly extract cooking heat and odors from busy commercial kitchens.
Museums
Maintains consistent airflow for climate control while operating smoothly to preserve a quiet environment.
Sport Arenas
Handles massive volumetric air exchange required to keep large crowds cool and comfortable indoors.
High-Rise Buildings
Perfect for vertical shaft ventilation, pushing air up through multiple floors against high static pressure.
LONGWELL — Trusted Industrial Fan Manufacturer Since 1990
Founded in 1990 in Yuyao, Ningbo, LONGWELL has grown into a vertically integrated ventilation technology group. We engineer standard and explosion-proof fan and motor systems with 4,000 m²+ of manufacturing floor, dedicated aerodynamics labs, and a global export network.
Every LONGWELL fan is built on automated lines, featuring computer-balanced impellers and 100% run-testing before shipment. We are certified to ISO 9001:2015 and ISO 14001, ensuring the highest standards of safety and reliability for hazardous and industrial applications.
Production & Quality Control
Strict quality control, automated assembly, and robust packaging ensure your fans arrive ready for action.
Global Market Presence
LONGWELL exhaust fans are the preferred choice for EPC contractors and industrial clients worldwide.
Trusted by Leading Brands
We supply reliable industrial ventilation solutions to top-tier global manufacturers.
Professional & Certified
Our products meet stringent international safety, quality, and performance standards.
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View Product →Frequently Asked Questions
Quick answers about the LWSJG / LWSJGFR Oblique Flow Pipeline Fans.
What is an oblique flow (diagonal flow) fan?
An oblique flow fan accelerates air both axially and radially. This design bridges the gap between axial fans (high volume) and centrifugal fans (high pressure), allowing it to push large volumes of air through long pipeline systems while overcoming high duct resistance.
How is the LWSJG series installed?
It is designed for seamless inline duct integration. The unit features standard flanged connections at both ends for direct pipeline attachment, and comes equipped with a sturdy base mounting bracket to ensure absolute stability during operation.
Is the fan suitable for continuous commercial use?
Yes. Built with a pure copper core motor, thickened steel blades, and a robust carbon steel casing, the LWSJG/LWSJGFR series is engineered specifically for 24/7 continuous duty in commercial and industrial HVAC systems.
Does this pipeline fan operate quietly?
Absolutely. The oblique flow aerodynamic profile reduces air turbulence, while the precision-balanced steel impeller and pure copper motor minimize mechanical vibration, ensuring low-noise, smooth operation ideal for hotels and museums.
Need a Quote or Custom Specifications?
Tell us your airflow, static pressure, and duct size requirements — our engineers will size the right LWSJG pipeline fan and provide a quote within 1 business day.
