Explosion-proof exhaust fan/Axial flow fan Used in the chemical,petroleum refining, ... and Zone 2,group2A,2B and 2C explosive atmosphere.2. Temperature class:T1~T4.3. Indoor or outdoor(IP54).4. Can ... , tankers, pharmaceutical, war industry and other dangerous place for ventilation, exhaust, cooling purposes. Features1. The product is composed of explosion-proof ...