DN780 waterproof casing flexible waterproof casing rigid waterproof casing

The sealing method of the waterproof casing of the through-wall cable has the following points. If the cable conduit passes through the casing, the sealing method is the same as the sealing of the wall-through water casing.
If the cable passes directly through the casing, the debris and rust in the casing should be removed first, and anti-rust paint should be painted on the pipe wall. Wait for the anti-rust paint to dry before passing the cable through the casing. Wait for the cable to pass through the casing. After the laying is completed and fixed, the sealing work can be carried out.
Fill the middle/part of the casing with linoleum silk or fireproof cotton, and fill it tightly on the top, bottom, left and right sides of the waterproof casing.
For wall cable waterproof casing, the inner and outer casings of the wall are filled with fireproof cement. After filling, use resin fire retardant to make slope-shaped small and large heads from the outside of the casing to the cable. After it is done, use insulation Use oil-paper waterproof tape to make the casing fireproof cement into large and small head cables and wrap them tightly before proceeding to the next process.