Fire dampers are passive fire protection products used in heating,
ventilation, and air conditioning (HVAC) ducts to prevent the
spread of fire inside the ductwork through fire-resistance rated
walls and floors. Fire/smoke dampers are similar to fire dampers in
fire resistance rating, and also prevent the spread of smoke inside
the ducts. When a rise in temperature occurs, the fire damper
closes, usually activated by a thermal element which melts at
temperatures higher than ambient but low enough to indicate the
presence of a fire, allowing springs to close the damper blades.
Fire dampers can also close following receipt of an electrical
signal from a fire alarm system utilising detectors remote from the
damper, indicating the sensing of heat or smoke in the building
occupied spaces or in the HVAC duct system.
Hebei Iron and Steel Qian'an Steelmaking Plant
Henan Shuangxin (formerly known as Tongbai Shuangxin Ventilation
and Water Supply Equipment Manufacturing Co., Ltd., often referred
to as Tongbai Shuangxin), the company's factory is located in
Tongbai County, Henan Province, and is mainly responsible for the
production and research and after-sales technical services of the
company's products
Selected Products
60 meters explosion-proof split type 150m explosion-proof fog
cannon 80 meters anti-freeze insulation 100m fog cannon Stainless
steel fog cannon
Learn More Chat Now
Hebei Wenfeng Steel
At present, the company's factory area currently covers a total
area of 60,000 square meters, with a workshop area of 40,000 square
meters. Among them, there are 4 large standard factory buildings,
one scientific research building, office building, and dormitory
building, and one large product exhibition hall. More than 200 sets
of modern production equipment and 2 laboratories.
Selected Products
60 meters explosion-proof split type 150m explosion-proof fog
cannon 80 meters anti-freeze insulation 100m fog cannon Stainless
steel fog cannon
Learn More Chat Now
Dengzhou Zhonglian Cement Factory
Nowadays, people are paying more and more attention to dust
removal/dust reduction/dust suppression fog cannon products, and
the application of fans is becoming more and more extensive. It is
our mission to create the best air environment for your work and
life. "Purify the air and benefit mankind" is the goal we strive
for, and we will wholeheartedly provide reasons for people from all
walks of life and friends...
Selected Products
60 meters explosion-proof split type 150m explosion-proof fog
cannon 80 meters anti-freeze insulation 100m fog cannon Stainless
steel fog cannon
Learn More Chat Now
Hebei Iron and Steel Qian'an Steelmaking Plant
Henan Shuangxin (formerly known as Tongbai Shuangxin Ventilation
and Water Supply Equipment Manufacturing Co., Ltd., often referred
to as Tongbai Shuangxin), the company's factory is located in
Tongbai County, Henan Province, and is mainly responsible for the
production and research and after-sales technical services of the
company's products
Selected Products
60 meters explosion-proof split type 150m explosion-proof fog
cannon 80 meters anti-freeze insulation 100m fog cannon Stainless
steel fog cannon
Learn More Chat Now
Hebei Wenfeng Steel
At present, the company's factory area currently covers a total
area of 60,000 square meters, with a workshop area of 40,000 square
meters. Among them, there are 4 large standard factory buildings,
one scientific research building, office building, and dormitory
building, and one large product exhibition hall. More than 200 sets
of modern production equipment and 2 laboratories.
Selected Products
60 meters explosion-proof split type 150m explosion-proof fog
cannon 80 meters anti-freeze insulation 100m fog cannon Stainless
steel fog cannon
Learn More Chat Now
Dengzhou Zhonglian Cement Factory
Nowadays, people are paying more and more attention to dust
removal/dust reduction/dust suppression fog cannon products, and
the application of fans is becoming more and more extensive. It is
our mission to create the best air environment for your work and
life. "Purify the air and benefit mankind" is the goal we strive
for, and we will wholeheartedly provide reasons for people from all
walks of life and friends...
Selected Products
60 meters explosion-proof split type 150m explosion-proof fog
cannon 80 meters anti-freeze insulation 100m fog cannon Stainless
steel fog cannon
Learn More Chat Now
Hebei Iron and Steel Qian'an Steelmaking Plant
Henan Shuangxin (formerly known as Tongbai Shuangxin Ventilation
and Water Supply Equipment Manufacturing Co., Ltd., often referred
to as Tongbai Shuangxin), the company's factory is located in
Tongbai County, Henan Province, and is mainly responsible for the
production and research and after-sales technical services of the
company's products