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Normally, it is the stagnant water of the S-shaped anti-odor bend of the drainage pipe, which is used for odor prevention, you can use a bucket to connect the water to test whether the water is smooth.
The more the difference, the faster, at least 5.
It is recommended that you make it waterproof from scratch! The main thing is the dredging of water pipes, and then it is to use a good waterproof material, and there is no problem with the strict prohibition of construction! Hope it helps!
At present, there are several ways to treat sewer pipes:
1. Red bricks, tiles on the outside, good overall effect, good sound insulation effect, not easy to have problems; >>>More
It is called a fire stop ring, also called a fire arresting ring, which is used on the high-rise floor, mainly to prevent fire from occurring.
The drainage pipes are installed first and then painted.