Circular Metal Ducting System

The spiral metal pipe of the Nanfeng system adopts galvanized metal plate with 2cm thick B1 grade rubber and plastic insulation material. The diameter of the small round pipe is smaller, with the minimum diameter of only about 80mm, and the ventilation is smooth and does not occupy the floor height. European standards, high ventilation efficiency, corrosion resistance, using Baosteel and Ma Steel and other domestic first-line factories hot-dip galvanized steel plates as the raw materials of the air duct, no precipitation, no odor, smooth and silent, safe and healthy, long life, metal pipes can withstand greater wind pressure, not easy to deform. The pipes are all mechanized by the factory, and the on-site construction personnel install them according to the drawings, eliminating the unreasonable airflow organization design caused by artificial construction of the pipeline, and the industry problems of poor equipment effect in the later stage, and the installation is fast. In addition, the pipe accessories adopt the seam welding process, the welds are neat, and an oxide film is formed at the welding point, which does not damage the galvanized layer and ensures the service life of the air duct. The port of the pipe accessory is equipped with a flame-retardant sealing rubber ring, which does not slide or fall off during installation, has a good sealing effect, and a long rubber ring life.