Pipeline insulation materials, which are generally several types of fire protection
According to the relevant standards of GB8624-9, the burning performance grade of building materials is divided into the following four grades: Class A: incombustible building materials: almost no combustion. B1 level: flame retardant building materials: a good flame retardant effect, in the air case of fire or high temperature is not easy to fire, not easy to spread, and in the open fire will immediately stop burning. B2 grade: flammable building materials: a certain role in the fire, in the air in case of fire or high temperature will immediately fire burning, easy to lead to fire spread, such as wood structure housing. B3 level: flammable Building materials: no fire retardant effect method often weary end of the whole take the whole household, easy to burn, fire a great danger. Pipeline temperature material varieties can be divided into inorganic insulation materials, organic insulation materials and composite insulation materials three types: 1. inorganic insulation materials are common: rock wool board, glass beads insulation mortar, foam cement board, glass wool Plate and so on (inorganic insulation material fire rating is usually A level). 2. Organic insulation materials are common: molded polystyrene board, phenolic resin board, polyurethane board (organic insulation material fire rating is usually B1 level). 3. Composite insulation materials are common: composite silicate insulation (A) and so on.
Building materials fire rating of the following four grades: A: non-flammable Building materials: almost no combustion. B1 level: flame retardant building materials: a good flame retardant effect, in the air case of fire or high temperature is not easy to fire, not easy to spread, and in the open fire will immediately stop burning. B2 grade: flammable building materials: a certain role in the fire, in the air in case of fire or high temperature will immediately fire burning, easy to lead to fire spread, such as wood structure housing. B3: Flammable Building materials: no flame retardant effect, easy to burn, fire a great danger.
Extruded board, rock wool, extruded board has B1, B2 level, the state is now not allowed to use B2 level, because the B2 level is not flame retardant, rock wool are generally A-level,
