消防排烟管道的设置及耐火极限应符合下列规定：
The setting and fire endurance of fire smoke exhaust pipes shall meet the following requirements:
1）机械排烟系统应采用管道排烟，且不应采用土建风道。
1) Mechanical smoke exhaust system shall adopt pipe smoke exhaust, and shall not adopt civil air duct.
2）排烟管道应采用不燃材料制作且内壁应光滑。
2) The smoke exhaust pipe shall be made of incombustible materials and the inner wall shall be smooth.
3）当排烟管道内壁为金属时，管道设计风速不应大于20m／s；当排烟管道内壁为非金属时，管道设计风速不应大于15m／s；
3) When the inner wall of the smoke exhaust pipe is metal, the design wind speed of the pipe shall not be greater than 20m ／ s; When the inner wall of the smoke exhaust pipe is non-metallic, the design wind speed of the pipe shall not be greater than 15m ／ s;
4）排烟管道及其连接部件应能在280℃时连续30min保证其结构完整性。
4) The smoke exhaust pipe and its connecting parts shall be able to ensure its structural integrity at 280 ℃ for 30 minutes continuously.
5）竖向设置的排烟管道应设置在独立的管道井内，排烟管道的耐火极限不应低于0.50h。
5) The smoke exhaust pipe set vertically shall be set in an independent pipe shaft, and the fire resistance limit of the smoke exhaust pipe shall not be less than 0.50h.
6）水平设置的排烟管道应设置在吊顶内，定送水 保定骨伤骨病 铜鼎铜钟 淤泥固化设备 保定舞蹈 化粪池钢模具 保定网站建设其耐火极限不应低于0.50h；当确有困难时，可直接设置在室内，但管道的耐火极限不应小于1.00h。
6) The horizontal smoke exhaust pipe shall be set in the ceiling, and its fire resistance limit shall not be less than 0.50h; When it is really difficult, it can be directly set indoors, but the fire resistance limit of the pipeline shall not be less than 1.00h.
7）设置在走道部位吊顶内的排烟管道，以及穿越防火分区的排烟管道，其管道的耐火极限不应小于1.00h，但设备用房和汽车库的排烟管道耐火极限可不低于0.50h。
7) The fire endurance of the smoke exhaust pipes set in the ceiling of the walkway and the smoke exhaust pipes passing through the fire compartment shall not be less than 1.00h, but the fire endurance of the smoke exhaust pipes in equipment rooms and garages may not be less than 0.50h.