Explosion-proof chain hoist is a special kind of security tools, there are two categories: aluminum bronze material and bronze material. Nanjing, the agent re-Pa Explosion proof chain hoist performance in line with the national standard GB10686-89. Of aluminum bronze, bronze as a rough, hand chain hoist with H62 aluminum alloy. 
 Aluminum Bronze 7.8% proof tools in the ethylene gas concentration in the operation does not cause an explosion; bronze proof tools in the concentration of hydrogen in 21% of the job does not cause an explosion, because bronze magnetic material to zero, so the bronze tools and explosion-proof said magnetic tool operation in the magnetic field environment. Explosion-proof chain hoists are widely used in petroleum, chemical, mining, gas, shipbuilding, power generation, metallurgy, aviation, transportation, storage, pharmaceuticals, plastics, leather, fireworks, firecrackers, gas stations, oil depots and other industries and there is a fire suffering or explosive environment.