Pre-embedded flexible waterproof casing product analysis

The casing is installed in the wall or concrete wall of the building to prevent the pipeline from passing through the wall and causing water leakage at the pipeline penetration wall. Rigid waterproof casing is suitable for pipeline through the wall does not bear the pipeline vibration and impact of the structure fittings. Rigid waterproof casing is one of the products with the longest service life and can be used for a long time.
Casing installation must be carried out at the pipeline through the wall, the casing must be welded on the pipe, and no gap is allowed to be left at the casing through the wall. When welding on the casing, the casing must be welded to the joint on the casing, and the joint must be welded firmly without any loose places. The welding of the joint with the casing connection must be welded through with mechanical welding rod so that the thickness of the weld is uniform. Casing joint surface must be cleaned up, there must be no floating ash and rust.
Rigid waterproof casing installation must be completed with cement mortar to casing surface protection layer, because in the cement mortar mixed with a large amount of lime, so that the casing to achieve waterproof effect after the water infiltration. (If the waterproof effect is not good, you can use cement mortar for sealing) and then brush a layer of asphaltic paint. Because the asphalt paint film and cement mortar has a certain bonding force and can play a waterproof effect. Then brush a layer of oil sesame oil can be. Before use, the wall should be leveled and cleaned, the various holes are processed according to the requirements, and the reserved hole size and elevation size should be accurately calculated so that the installation is accurate before installation.