Introduction of ventilation duct

Ventilation pipe is the abbreviation of ventilation pipe, which is a metal or nonmetal pipe used in ventilation and air conditioning engineering of industrial and civil buildings. 1 2 ventilation pipeline is a kind of municipal infrastructure to make air circulate and reduce the concentration of harmful gases. The main finished materials such as plates and profiles used in the manufacture and installation of ventilation pipes and air ducts shall conform to the current national design standards and the provisions of related products, and pass the ex-factory inspection. When materials enter the site, they shall be accepted according to the current national standards. According to materials, ventilation pipes generally include: steel plate ventilation pipe (ordinary steel plate), galvanized steel plate ventilation pipe (white iron), stainless steel ventilation pipe, glass fiber reinforced plastic ventilation pipe, plastic ventilation pipe, composite material ventilation pipe, color steel sandwich insulation board ventilation pipe, double-sided aluminum foil insulation ventilation pipe, single-sided color steel insulation ventilation pipe, wrapped ventilation pipe (such as mine ventilation pipe) and plastic ventilation pipe for mining.