[] Shandong smoke damper most comprehensive smoke damper manufacturers find Hao Feng. Sales Hotline: 13573487358 smoke dampers, fire protection components, typically installed in the pipe mechanical exhaust system, usually was turned off, turn on the exhaust case of fire, smoke exhaust pipe when the internal temperature reaches 280 degrees off, and within a certain amount of time to meet the leakage of smoke and fire integrity requirements, from smoke fire retardant effect. Main material: carbon steel, galvanized steel, stainless steel. Advantages folding a smoke damper, low air leakage, airtight performance; 2, the electric current consumption is small open; 3, strong corrosion resistance and long service life; (made of stainless steel type) 4, the actuator drive flexible feedback interlock signal accurately.