There are many pipes on the top of the underground garage in the community. What pipes are these?

There are many pipes on the top of the underground garage in the residential area, including fire pipes, exhaust pipes and some groundwater pipes, all of which have different uses.

1, white plastic is generally a drainage pipe, which is the outlet of some wastewater in our life.

2. The red steel pipe is a fire hose, which is the guarantee of our life, so the red color is conspicuous and there is no shelter.

3. Gray steel pipes or plastic pipes are water supply pipes, from which the water used in our daily life leads to every household.

4. Iron rectangular or circular pipes are ventilation pipes, which are a kind of pipes that every community will have.