防排烟系统的柔性短管采用易燃材料
The flexible short pipe of smoke control system is made of flammable materials
防排烟系统柔性短管的制作材料必须为不燃材料，且应选用防腐、防潮、不透气、不易霉变的柔性材料。用于空调系统的应采取防止结露的措施；用于水泥杆 保定空压机 保定古筝 塑料增韧剂 拱形护坡模具 保定空调维修 托辊设备  托辊生产线空调净化系统的还应是内壁光滑、不易产生尘埃的材料。
The flexible short pipe of smoke control and exhaust system must be made of non combustible materials, and the flexible materials that are anti-corrosion, moisture-proof, air tight and not easy to mildew shall be selected. For air conditioning system, measures to prevent condensation shall be taken; The materials used for air conditioning purification system shall also be materials with smooth inner wall and not easy to produce dust