The use of waterproof casing through the wall.

Waterproof casing is used in various pipelines. The main function of waterproof casing is to pre-bury waterproof casing in advance in the wall that needs to pass through the pipeline, leaving a place for later pipe penetration. Waterproof casing in the drainage pipe can optimize the waterproof structure of the pipe parts, facilitate the construction of the waterproof layer of the detailed treatment, to avoid the temperature and other stresses on the waterproof layer of damage, to maintain the integrity of the waterproof layer. Waterproof casing can be divided into two types of rigid waterproof casing and flexible waterproof casing, the installation is completed to allow the amount of deformation for flexible waterproof casing, the installation is completed to allow no deformation for rigid waterproof casing.
 
Flexible waterproof casing is mainly used in the human defense walls, pools and other demanding places, rigid waterproof casing is generally used in the basement and other pipes need to wear the location of the pipe. Waterproof casing can also play a protective role, waterproof casing is in the pipeline through the railway, road, street, etc., in order to prevent the pipeline from being crushed by the load, and set up a protective casing outside the pipe.