According to the relevant regulations, the fire-proof wrapping material of the smoke exhaust pipe should use non-combustible materials, that is, class A non-combustible materials, and the smoke exhaust pipe and its connecting parts should be able to ensure its structural integrity at 280 ° C for 30 minutes continuously. Therefore, the fire-proof packaging material for smoke and exhaust pipes should not only have non-combustible properties, but also have high temperature resistance.

1, smoke control glass wool
Smoke and exhaust glass wool is a high temperature resistant inorganic fiber product developed on the basis of glass wool according to the requirements of smoke and exhaust system in GB51251 Technical Standard for Building Smoke and exhaust System. In addition to the performance characteristics of ordinary glass wool, smoke control glass wool also has higher high temperature resistance and heat insulation performance, the highest temperature of use is 538℃, according to different fire protection project requirements, can provide 0.5~1h fire resistance limit.


2, smoke control rock wool
Smoke and exhaust rock wool is also a product developed for the fire resistance requirements of smoke and exhaust pipes. It belongs to A1 class non-combustible fireproof material, with high temperature resistance up to 800℃ and fire resistance up to 2h. The thermal conductivity of smoke wool is low (0.036W/m·k, 70℃), which can improve energy saving effect, and does not contain asbestos, REACH and ROHs harmful substances to the environment, does not support mildew and bacterial growth, health and environmental protection.


3, silicate fire board
Silicate fireproof board using silicate minerals, the use of high temperature sintering technology and obtained a high temperature product, high temperature resistance up to 1250℃, with fire, waterproof, moisture-proof, corrosion resistance and other characteristics. In the application of smoke control pipe, silicate fire control board is often used with smoke control glass wool and smoke control rock wool, so that the fire resistance is higher and the fire resistance is better.


4. Aerogel
Aerogel is a kind of low-density solid gel material, gas or air accounts for the remaining 97% of its volume, coupled with the aerogel inside the tiny holes, three-dimensional, interwoven structure, so that the gas in the internal flow space is very small, can inhibit convection, can inhibit gaseous conduction, so aerogel can become a good insulation material.