What is the internal structure of the flue?

In the past, most flues were prefabricated with sulphoaluminate cement and alkali-resistant glass fiber mesh or ordinary silicate cement and steel wire mesh. At present, the high-strength refractory flue made of high-strength glass-magnesium refractory flue plate is mechanically assembled, and the flue is equipped with variable pressure gas extraction components.

Flue is a tubular device for exhausting waste gas and flue gas. Residential flue refers to a vertical pipe product used for exhausting kitchen flue gas or toilet flue gas, also known as exhaust duct, ventilation duct and residential exhaust duct.