Rigid waterproof casing, in the pipeline through the wall, in order to prevent pipeline vibration or uneven force where the need to wear the wall where the casing needs to be used. Under normal circumstances, if the pipe vibrates or is unevenly stressed, it will cause the casing to deform or produce cracks. When this happens with casing, special attention should be paid to prevent cracks from being produced at the wall penetration due to improper installation. Rigid waterproof casing for easy maintenance and maintenance should also pay special attention to the daily maintenance work. There are vibrations and uneven force should be selected where the flexible waterproof casing. Rigid polymer waterproof casing of the pipe wall shall not have cracks or perforations.
Sealed casing, used at the gap between the pipe and the wall. Casing using waterproof structure, are made of rigid materials, and thus its rigidity is higher. Generally there is a gap between the casing and the wall, and some of them can be utilized in ways such as fixed connection of pipes. Therefore, sealed casing is one of the mainly used in flexible and rigid waterproof casing. Because flexible waterproof casing has good waterproof performance, thus it is widely used in construction and municipal engineering for water supply and drainage, heat, gas, water, sewage treatment, fire fighting, water supply, hydropower station and other industries. Flexible waterproof casing can play a certain role in corrosion resistance and can withstand the corrosive effect of the external environment. At the same time, it can also play a certain role in shock absorption, which can ensure the safety of construction equipment and people.
