Power & Boilers
Shivam Engineering & Fabrication manufactures high-performance Forced Draught (FD), Induced Draught (ID) and combustion air blowers for thermal power plants, boilers, and captive power generation units.
Perfect Solutions for
Power & Boiler Plants
Need FD, ID or PA Fans for Your Power Plant?
High-efficiency, heavy-duty blowers engineered for reliable performance in thermal power and boiler applications.
Impeller for Power Plants & Boilers
Heavy-duty, high-efficiency impellers engineered specifically for thermal power plants and industrial boilers – FD fans, PA fans, ID fans, and coal pulverizers.
When power plant operators and boiler manufacturers across India need reliable, heavy-duty impellers for their critical rotating equipment, they turn to Shivam Engineering & Fabrication. As a leading impeller manufacturer for power plants and industrial boilers, we have supplied thousands of impellers to thermal power plants, captive power plants, and industrial boiler houses across the country. Our impellers are engineered for continuous 24/7 operation in high-temperature, abrasive, and demanding conditions – perfectly suited for power generation applications.
Why Power Plants Need Heavy-Duty Impellers
Power plants and industrial boilers require impellers that can withstand high temperatures, abrasive dust (coal dust, fly ash), and continuous operation. Our specially designed impellers feature:
- High Pressure Capability – For PA fans up to 2,500+ mmWC.
- High Temperature Capability – For ID fans up to 300°C.
- Abrasion-Resistant Construction – Hardox/AR plate for coal dust and fly ash handling.
- High Efficiency Aerofoil Blades – For FD and PA fans to reduce power consumption.
- Precision Dynamic Balancing – ISO 1940 G-6.3 to G-2.5 grade.
- Heavy-Duty Hub Design – For 24/7 continuous operation.
- Full Material Traceability – Material certifications provided.
Types of Impellers We Manufacture for Power Plants & Boilers
1. FD (Forced Draft) Fan Impellers
Supplies combustion air to the boiler furnace. Handles clean air at ambient temperature. High volume, medium to high pressure (500-1,200 mmWC). Features backward curved or airfoil blades for maximum efficiency.
2. PA (Primary Air) Fan Impellers
High pressure impellers for coal pulverizers. Supplies air for drying and transporting pulverized coal to burners. Highest pressure application (800-2,500+ mmWC). Requires high-strength construction and abrasion-resistant materials.
3. ID (Induced Draft) Fan Impellers
Handles hot flue gases (150-300°C) containing fly ash. Requires high-temperature materials, abrasion-resistant coatings, and radial tip blades for fly ash handling.
4. SA (Secondary Air) Fan Impellers
Supplies additional combustion air. Similar to FD fan but often handles preheated air (150-250°C). Requires high-temperature capability.
5. Coal Pulverizer Impellers (Beater Wheel Mills)
High-speed, abrasion-resistant impellers for coal pulverizers. Requires Hardox/AR plate construction and heavy-duty design.
6. Industrial Boiler Fan Impellers
For smaller industrial boilers (process industry). Backward curved or radial tip designs for coal, biomass, or oil/gas-fired boilers.
Power Plant Fan Impeller Comparison
| Fan Type | Purpose | Pressure Range | Temperature | Recommended Impeller Type |
|---|---|---|---|---|
| FD Fan | Combustion air supply | 500-1,200 mmWC | Ambient-150°C | Airfoil / Backward Curved |
| PA Fan | Coal pulverizer air | 800-2,500+ mmWC | Up to 150°C | Backward Curved / Radial Tip |
| ID Fan | Flue gas extraction | 300-1,000 mmWC | 150-300°C | Radial Tip (Abrasion-Resistant) |
| SA Fan | Secondary combustion air | 400-800 mmWC | 150-250°C | Backward Curved |
Material Options for Power Plant Applications
Depending on the fan type and operating conditions, Shivam Engineering & Fabrication offers different construction materials:
- Heavy-Duty Mild Steel (MS) – For FD fans, SA fans, and general industrial boiler applications (clean air, moderate temperature).
- Hardox / AR (Abrasion Resistant) Plate (400/450/500) – For PA fans (coal dust) and ID fans (fly ash handling). Provides excellent abrasion resistance.
- Stainless Steel SS304 – For high-temperature applications (150-300°C) and moderate corrosion resistance.
- Stainless Steel SS309 / SS310 – For very high-temperature applications (300-500°C).
- Abrasion-Resistant Weld Overlay – Tungsten carbide or chromium carbide overlay for extreme abrasion in ID fans.
- Cast Aluminum – For lightweight, spark-resistant applications (spark arrestor fans).
ID Fan Impellers – High Temperature & Abrasion Resistant
ID (Induced Draft) fans handle the most demanding conditions in a power plant – high-temperature flue gases containing abrasive fly ash. Our ID fan impellers feature:
- Radial Tip Blade Design – Designed for abrasion resistance, not maximum efficiency.
- Hardox/AR Plate Construction – For the blade and shroud to resist fly ash erosion.
- High-Temperature Material – SS304 or heat-resistant alloy for the hub.
- Water-Cooled or Air-Cooled Hub – To protect bearings from high temperature.
- Abrasion-Resistant Weld Overlay – Optional tungsten carbide overlay on leading edges.
- High-Temperature Balancing – Balanced at operating temperature to ensure smooth operation.
PA Fan Impellers – High Pressure for Coal Pulverizers
PA (Primary Air) fans supply high pressure air to coal pulverizers. Our PA fan impellers feature:
- High Pressure Capability – Designed for pressures up to 2,500+ mmWC.
- Backward Curved or Radial Tip Blades – Balanced for efficiency and abrasion resistance.
- High-Strength Hub – Heavy-duty design for high rotational speeds.
- Abrasion-Resistant Leading Edges – For protection against coal dust.
- Precision Balancing – ISO 1940 G-4.0 or better for high-speed operation.
Technical Specifications
- Diameter Range: 300 mm to 3,500+ mm (12" to 140"+), depending on fan type
- Material Thickness: 3 mm to 25+ mm depending on size and application
- Blade Types: Airfoil, backward curved, radial tip, forward curved
- Hub Types: Keyed shaft, taper lock, flanged, splined
- Materials: Heavy-Duty MS, Hardox/AR 400/450/500, SS304, SS309, SS310, Cast Aluminum
- Balancing Grade: ISO 1940 G-6.3 (standard), G-4.0, G-2.5 (on request for high-speed)
- Temperature Range: Ambient to 500°C depending on material selection
- Manufacturing Process: CNC laser cutting, precision forming, robotic welding, 5-axis CNC machining
- Quality Control: 100% dimensional inspection, weld inspection (dye penetrant/ultrasonic), balancing, material certification
Coal Pulverizer Impellers (Beater Wheel Mills)
For coal pulverizers (beater wheel mills) used in lignite-fired power plants, we manufacture specialized impellers:
- High-Speed Design – Operating speeds up to 750-1,000 RPM.
- Hardox/AR Plate Construction – For maximum abrasion resistance against lignite and coal dust.
- Heavy-Duty Hub – Designed for high centrifugal forces.
- Replaceable Wear Plates – For extended service life and easy maintenance.
- Precision Balancing – ISO 1940 G-4.0 or better.
Dynamic Balancing – Quality Assurance
Every impeller manufactured by Shivam Engineering & Fabrication undergoes precision dynamic balancing:
- ISO 1940 G-6.3 Grade – Standard for most power plant FD and SA fans.
- ISO 1940 G-4.0 Grade – For PA fans, ID fans, and high-speed applications.
- ISO 1940 G-2.5 Grade – For critical high-speed impellers (coal pulverizers, high-speed fans).
- High-Temperature Balancing – For ID fans, balancing at operating temperature simulation.
- Balancing Report – Provided with every impeller showing initial and residual unbalance.
- Overspeed Testing – Available on request for high-speed impellers.
Quality Assurance & Testing
Every impeller manufactured by Shivam Engineering & Fabrication undergoes:
- Dimensional inspection as per design drawing (CMM for critical dimensions)
- Weld quality inspection (dye penetrant test; ultrasonic testing for heavy-duty impellers)
- Dynamic balancing (ISO 1940 G-6.3 grade minimum)
- High-temperature run test (for ID fan impellers)
- Material certification (Mill Test Certificate) for all steel grades
- Positive Material Identification (PMI) testing available on request
- Balancing report provided with each impeller
Benefits of Our Impellers for Power Plants & Boilers
- High Efficiency: Airfoil and backward curved impellers reduce power consumption (2-5% savings).
- High Temperature Capability: ID fan impellers handle up to 300°C (500°C on special design).
- Abrasion Resistance: Hardox/AR plate and tungsten carbide overlay for coal dust and fly ash.
- High Pressure: PA fan impellers up to 2,500+ mmWC for pulverized coal transport.
- Precision Balancing: Low vibration, reduced bearing wear, longer equipment life.
- OEM Replacement: Exact duplicates of original equipment impellers.
- Full Traceability: Material certifications and balancing reports provided.
Serving Power Plants Across India
Shivam Engineering & Fabrication supplies impellers to thermal power plants, captive power plants, and industrial boilers in:
- Maharashtra: Mumbai, Pune, Nashik, Nagpur, Chandrapur, Koradi, Paras, Bhusawal (MSEB, Tata Power, Adani, Reliance)
- Gujarat: Ahmedabad, Vadodara, Surat, Rajkot, Jamnagar, Mundra (GSECL, Adani Power, Tata Power, Torrent)
- Madhya Pradesh: Satna, Singrauli, Bina, Khandwa (NTPC, MPPGCL)
- Chhattisgarh: Korba, Raipur, Raigarh (NTPC, CSEB, JSPL)
- Odisha: Angul, Talcher, Jharsuguda (NTPC, OPGC, Vedanta)
- Telangana: Ramagundam, Kothagudem (NTPC, TSPGENCO)
- West Bengal: Durgapur, Kolaghat, Farakka, Bakreshwar (WBPDCL, DVC)
- Tamil Nadu: Chennai, Tuticorin, Neyveli (TNEB, NLC, NTPC)
- Andhra Pradesh: Vijayawada, Visakhapatnam, Krishnapatnam (APGENCO, NTPC)
- Uttar Pradesh: Singrauli, Anpara, Dadri, Unnao (NTPC, UPRVUNL)
- Rajasthan: Kota, Chhabra, Suratgarh, Banswara (RVUNL)
- Karnataka: Raichur, Bellary, Kudgi (KPCL, NTPC)
Industrial Boiler Hubs (Process Industry): Ahmedabad (textile), Ludhiana (textile), Tiruppur (textile), Mumbai (chemical), Vadodara (chemical), Hyderabad (pharma), Delhi NCR (various).
Frequently Asked Questions – Impeller for Power Plants & Boilers
1. What is the difference between FD fan impeller and ID fan impeller?
FD (Forced Draft) fan impellers handle clean, cool air at moderate pressure (500-1,200 mmWC) and use high-efficiency airfoil or backward curved blades. ID (Induced Draft) fan impellers handle hot (150-300°C), abrasive flue gas containing fly ash, using radial tip blades for abrasion resistance, with heat-resistant materials and often water-cooled hubs.
2. What material is best for PA fan impellers handling coal dust?
For PA fan impellers handling coal dust, we recommend Hardox/AR 400 or 500 plate for the blades and shrouds. For the hub, heavy-duty mild steel or SS304 is used. The leading edges can be protected with tungsten carbide weld overlay for extended life.
3. Can you manufacture replacement impellers for imported power plant fans?
Yes. Shivam Engineering & Fabrication manufactures exact replacement impellers for all major OEM brands including Howden, Flakt Woods, TLT, GE, Siemens, and others. We can work from samples, drawings, or 3D scans.
4. What is the typical balancing grade for ID fan impellers?
ID fan impellers are typically balanced to ISO 1940 G-6.3 grade. For high-speed ID fans and critical applications, G-4.0 grade is recommended. We provide balancing reports with every impeller.
5. How can I get a quote for an impeller for my power plant or boiler?
Call Mr. Nitin Panchal at +91-90168 77642 or email shivamenggfabricators@gmail.com. Provide fan type (FD/PA/ID/SA), impeller diameter, operating temperature, material requirements, and any available drawings – we'll respond within 24 hours.
Get Your Impeller from a Trusted Manufacturer
As one of the leading impeller manufacturers for power plants and industrial boilers, Shivam Engineering & Fabrication provides:
- Free technical consultation and impeller selection assistance
- Custom designs for FD, PA, ID, SA fans, and coal pulverizers
- Heavy-duty materials including Hardox/AR plate, SS304, and heat-resistant alloys
- Abrasion-resistant options (tungsten carbide overlay) for ID and PA fans
- High-temperature designs up to 500°C with water/air-cooled hubs
- Precision dynamic balancing (G-6.3 to G-2.5) with balancing reports
- OEM replacement impellers for all major power plant fan brands
- Full material traceability with Mill Test Certificates (MTC)
- Positive Material Identification (PMI) testing available
- Overspeed testing for high-speed impellers
- Competitive lead times and pan-India delivery
- After‑sales support and technical assistance
Contact Mr. Nitin Panchal at +91-90168 77642 or email shivamenggfabricators@gmail.com. Let Shivam Engineering & Fabrication manufacture the perfect impeller for your power plant or industrial boiler.
* All specifications and performance data are based on standard operating conditions. Custom requirements are engineered per client process parameters.