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IronAxis Technical Team
10 Sep 2026
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Top Explosion-Proof Anti-Corrosion Roof Centrifugal Fans: 5 Brands for Chinese Refinery Ventilation
Refinery buildings in China require roof-mounted centrifugal fans that resist corrosive gases and meet strict explosion-proof standards. For global buyers, selecting the right brand and managing import risks is critical. This article reviews five real brands—Howden, Greenheck, Systemair, FläktGroup, and Soler & Palau—and provides a practical sourcing framework.
These brands are widely recognized in industrial ventilation. Howden (Scotland) offers heavy-duty centrifugal fans for petrochemical applications. Greenheck (USA) supplies explosion-proof roof fans with AMCA certification. Systemair (Sweden) provides ATEX-compliant models for hazardous zones. FläktGroup (Germany) specializes in corrosion-resistant fans for refinery exhaust. Soler & Palau (Spain) offers cost-effective explosion-proof roof units for moderate corrosive environments. Always verify local Chinese production or import status, as some models are manufactured locally under license.
When importing from China, confirm the fan meets Chinese GB 3836 (explosion-proof) and GB/T 13274 (corrosion) standards, plus international IECEx or ATEX if required. Request third-party test reports. For logistics, roof fans are bulky; use FCL or LCL with reinforced crating. Incoterms: prefer FOB or CIF for first shipments. Payment: 30% T/T deposit, 70% against B/L copy. Inspection: hire a third-party agency (e.g., SGS, BV) for pre-shipment verification.
| Brand | Country | Explosion-Proof Rating | Corrosion Resistance | Typical Refinery Use | Sourcing Note |
|---|
| Howden | Scotland | ATEX, IECEx | High (stainless steel, coatings) | Hydrogen, sulfur recovery | Premium price; long lead time |
| Greenheck | USA | UL, AMCA | Medium-high | Control rooms, labs | US-made; verify voltage |
| Systemair | Sweden | ATEX, IECEx | High | Solvent storage, paint booths | European quality; local service |
| FläktGroup | Germany | ATEX, IECEx | Very high (special alloys) | Acid gas exhaust | Custom orders; high cost |
| Soler & Palau | Spain | ATEX (select models) | Medium | General ventilation | Budget option; verify zone |
Procurement checklist: 1) Confirm hazardous zone classification (Zone 1 or 2). 2) Require fan curve and power data. 3) Check motor insulation class (H) and IP rating (55 or higher). 4) Verify anti-corrosion coating (epoxy, polyurethane). 5) Request spare parts list and lead time. 6) Ensure documentation includes explosion-proof certificate, test report, and O&M manual.
Risks: Non-compliant fans can cause ignition, fines, or shutdown. Counterfeit ATEX labels exist. Logistics damage from improper crating. Currency and tariff fluctuations (US Section 301 tariffs on Chinese fans). Mitigate by using escrow, pre-shipment inspection, and sourcing from authorized distributors.
Maintenance: Schedule quarterly inspections for corrosion, vibration, and bearing temperature. Replace gaskets and seals annually. Keep spare impellers and motors. For Chinese refineries, follow GB 50257 electrical code and local fire safety regulations.
