PP Plastic Produced Ventilation Duct With Advantages of Acid and Alkali Corrosion ResistancePP polypropylene duct is a piping system used for air transportation and distribution. The PP duct is a ventilation duct made of PP material. Compared with air ducts of other materials, it has the characteristics of wear resistance, non-scaling, low flow resistance, corrosion resistance, etc., and has the characteristics of anti-freeze cracking and sound insulation. It is a widely used pipe at present. Due to these characteristics of the PP air duct, it is also used in waste gas environmental protection equipment to reduce the concentration of harmful gases and allow air to circulate.