Flexible waterproof casing is used in underground engineering, chemical industry, steel, construction, chemical industry, just iron, water, sewage treatment and other units. Flexible sealed casing is designed and manufactured to solve the problem of some underground projects that need to pass through walls with strict waterproofing requirements; and some buildings that need to pass through walls while restricting the pipeline from expansion and displacement due to temperature changes or external forces, not to mention vibration due to external factors. Its casing is poured on the wall at one time, the pipe passes through the middle of the casing, and the outer diameter of the pipe and the middle of the casing are sealed with fillers to play the role of waterproofing and vibration reduction.

Of course, when using flexible waterproof casing for welding, it needs to be set according to the sealing conditions. The welding requirements currently in use are in full compliance with national standards, such as the basic shape and size, in full compliance with national standards. Therefore, these aspects are the key issues that should be paid attention to when using and should be paid attention to during normal operation.
The requirements for sealing aspects should also be paid attention to the use of concrete, and it is good to be used together with the construction aspects so that better advantages can be achieved in terms of sealing, because when using this equipment, there should be strict sealing control.