The enclosures of flameproof explosion-proof floodlight lamps and explosion proof ballasts are manufactured in alumium alloy die-cast. The surface of the bodies are sprayed epoxy resin powder, therefore they have good anti-corrosion performance so as to satisfy the requirements in chemical, petrochemical and sea industries. Flame proof explosion-proof floodlight lamps comprise aluminum alloy bodies reflectors toughened glass transparent parts and guards. Spigot joints are dopted so as to have the functions of opening covers quickly. Flameproof explosion-proof floodlight lamp are used for large range illuminating in the circuits of AC 220V 50HZ Mercury vapor lamps, high pressure sodium vapor lamps. Metal halide lamps are fitted with explosion-proof ballasts