T35 & BT35 Axial Flow Fans: Standard & Explosion-Proof Ventilation Solutions for Industrial Hazardous Areas

Industrial ventilation is the core foundation of workshop safety, production efficiency, and indoor air quality. Ordinary ventilation fans often fail to meet industrial demands for stable airflow, high temperature resistance, and hazardous environment safety. For conventional factory ventilation, heat dissipation, and air exchange projects, T35 Axial Flow Ventilators provide cost-effective and high-efficiency general ventilation. For flammable, explosive, and high-risk industrial zones, BT35 Explosion-Proof Axial Fans deliver certified explosion-proof performance to eliminate hidden explosion hazards caused by electrical sparks and friction. Widely adopted in global chemical, petroleum, mining, manufacturing, and construction industries, these two series cover full-scenario industrial ventilation needs. This blog elaborates on their product differences, core advantages, technical standards, and professional application scenarios. T35 and BT35 axial fans are modular industrial ventilation equipment with simple structure, low noise, high air volume, and easy installation. While sharing consistent airflow design and mechanical structure, they are positioned for distinct working environments: T35 for general non-hazardous ventilation, and BT35 for specialized explosion-risk hazardous areas. They have become the most mainstream and reliable axial fan series for global industrial contractors and mechanical engineering projects.

What Are T35 & BT35 Axial Flow Fans?

T35 Axial Flow Ventilator is a high-efficiency general-purpose axial fan designed for conventional industrial and commercial ventilation. Featuring optimized airfoil aluminum blades and high-efficiency motors, it achieves large air volume, low energy consumption, and stable operation. It is widely used for workshop air exchange, equipment heat dissipation, warehouse ventilation, and building exhaust in ordinary non-explosive and non-corrosive environments.

BT35 Explosion-Proof Axial Fan is an upgraded explosion-proof version of the T35 series. It inherits all structural advantages of T35 fans and adopts professional explosion-proof motor and spark-proof blade design. Compliant with international IEC60079 and GB3836 explosion-proof standards, it carries Ex d IIB T4 Gb explosion-proof rating, safely applicable to Zone 1 and Zone 2 explosive gas atmospheres, covering IIA/IIB flammable gas and dust environments.

Core Technical Features & Performance Advantages

1. Universal Advantages of T35 & BT35 Series

  • High-Efficiency Airfoil Design Precision molded aluminum alloy blades with optimized aerodynamic structure deliver large air volume, low wind resistance, and high ventilation efficiency. The fans realize rapid air circulation, effectively discharging hot air, dust, and turbid gas to maintain indoor air freshness.

  • Low Noise & Stable Operation Balanced rotor structure and low-vibration motor design reduce operating noise and mechanical resonance. The whole unit runs smoothly with low failure rate, meeting long-term 24/7 continuous industrial operation requirements.

  • Flexible Installation & Wide Adaptability Support wall-mounted, pipeline-mounted, and roof-mounted installation. Compact structure saves space, suitable for fixed ventilation and auxiliary pipeline air supply/exhaust in various industrial sites.

  • Durable & Weather-Resistant Structure The fan casing adopts high-quality steel plate with anti-rust powder coating, featuring anti-corrosion, anti-aging, and weather-resistant performance. It adapts to indoor and outdoor industrial environments with long service life.

2. Exclusive Advantages of BT35 Explosion-Proof Model

  • Professional Explosion-Proof Certification Equipped with fully enclosed explosion-proof motor and spark-free structural design. It strictly complies with IEC60079-0, IEC60079-1 and national GB3836 series standards, effectively preventing electric sparks and mechanical friction sparks. It avoids ignition of surrounding flammable gas and dust, ensuring zero explosion risk in hazardous zones.

  • Hazardous Area Adaptability Certified for Zone 1 and Zone 2 explosive gas environments, applicable to T1-T4 temperature groups. It perfectly matches petroleum, chemical, gas station, and paint workshop high-risk ventilation scenarios.

  • Enhanced Sealing & Safety Protection IP54 waterproof and dustproof grade isolates external dust, moisture, and corrosive gas. Special cable explosion-proof wiring structure prevents gas penetration and electric leakage, realizing full safety protection.

T35 VS BT35: Clear Product Positioning Difference

Comparison Item T35 Axial Flow Ventilator BT35 Explosion-Proof Axial Fan
Application Environment General non-explosive industrial & commercial areas Flammable, explosive gas & dust hazardous areas
Explosion-Proof Grade No explosion-proof function Ex d IIB T4 Gb (International standard)
Core Function Daily ventilation, heat dissipation, air exchange Safe exhaust & ventilation for high-risk zones
Certification Standard General industrial mechanical standard IEC60079 / GB3836 explosion-proof standard
Cost Performance High cost-effective for conventional ventilation projects Professional safety solution for hazardous industrial projects

Typical Industrial Application Scenarios

T35 Axial Ventilator Main Applications

  • General Factory Workshop Ventilation: Machinery manufacturing, textile, food processing, and electronics workshops for daily air exchange, heat dissipation, and dust removal

  • Warehouse & Logistics Ventilation: Industrial warehouses, storage rooms, and basements to prevent moisture accumulation and stuffiness

  • Commercial & Public Buildings: Subway stations, shopping malls, and gymnasiums for auxiliary ventilation and exhaust

  • Equipment Heat Dissipation: Matching mechanical equipment, power distribution rooms, and cooling systems for forced heat dissipation

BT35 Explosion-Proof Fan Main Applications

  • Chemical & Petrochemical Industry: Chemical plants, refineries, and chemical storage areas for exhausting flammable and volatile chemical gas

  • Coal & Mining Industry: Underground auxiliary tunnels, mining workshops, and ore processing sites for dust and flammable gas exhaust

  • Paint & Spraying Workshops: Automotive spraying, furniture painting, and coating workshops to discharge combustible paint mist and organic waste gas

  • Gas Station & Energy Industry: Gas stations, oil depots, and new energy processing plants for safe ventilation of combustible oil and gas

  • Pharmaceutical & Fine Chemical Plants: Pharmaceutical production workshops with volatile flammable materials to ensure safe production environments

  • Marine & Offshore Platforms: Offshore oil platforms and marine equipment cabins for explosion-proof ventilation in humid and flammable environments

Risks of Wrong Fan Selection

  • Safety Hazards in Hazardous Zones: Using ordinary T35 fans in explosive environments easily causes spark ignition and leads to explosion accidents

  • Substandard Project Acceptance: High-risk industrial projects must adopt certified explosion-proof fans, otherwise fail safety inspection and compliance acceptance

  • Poor Ventilation Efficiency: Mismatched fan model causes insufficient air volume, poor heat dissipation, and accumulated harmful gas

  • Short Equipment Service Life: Ordinary non-explosion-proof motors are prone to aging and damage in corrosive and dusty industrial environments

Why Choose Our T35 & BT35 Axial Fans?

  • Full-Scenario Product Coverage: T35 for general ventilation, BT35 for explosion-proof hazardous areas, meeting all industrial ventilation demands

  • International Standard Compliance: BT35 strictly follows IEC60079 and GB3836 standards with complete explosion-proof certification

  • High-Efficiency & Energy-Saving: Optimized aerodynamic design reduces power consumption while ensuring large air volume

  • Low Noise & Stable Operation: Precision balancing process ensures long-term trouble-free continuous operation

  • Multiple Installation Methods: Flexible wall, pipeline, and roof mounting to adapt to various site conditions

  • Durable Industrial Grade: Anti-rust, anti-corrosion, and weather-resistant casing for harsh industrial environments

  • Bulk Export Support: Complete certification documents, stable batch supply, and customized service

Installation & Usage Notes

  • BT35 explosion-proof fans must be installed and wired by professional electricians to ensure standard explosion-proof wiring

  • Regularly clean fan blades and inlets to avoid dust accumulation affecting ventilation efficiency and safety performance

  • Check motor operation and bearing lubrication regularly to eliminate abnormal vibration and noise

  • Do not use T35 ordinary fans instead of BT35 explosion-proof fans in flammable and explosive areas

Final Thoughts

T35 and BT35 axial flow fans form a complete set of industrial ventilation solutions. T35 series provides economical and efficient air exchange and heat dissipation for conventional industrial and commercial scenarios, while BT35 explosion-proof series guarantees intrinsic safety for high-risk flammable and explosive working environments. With reliable quality, stable performance, and wide environmental adaptability, they are essential mechanical equipment for factory safety production, environmental improvement, and standardized engineering construction.