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How much should the waterproof sleeve extend out of the wall after installation

Time: 05-11 󰃯 Reading times: 438 󰃳 Editor in charge: The sea 󰃗 Column: product focus

Introduction: In the pipeline installation, the waterproof sleeve is an indispensable embedded part. It can protect the pipeline to cross the railway, road, street and other places in good condition, so as to avoid the pipeline from being crushed by the load. After the installation of waterproof casing, it is necessary to check on time and deal with the problems found

In the installation of pipes, Waterproof casing They are indispensable embedded parts. It can protect the pipeline to cross the railway, road, street and other places in good condition, so as to avoid the pipeline from being crushed by the load.
After the installation of waterproof casing, it is necessary to check on time and deal with the problems found, which will help to extend the service life of the casing. It is also necessary to maintain the waterproof casing on time. If it is found that the waterproof casing is rusty, rust prevention treatment should be carried out immediately, and the surface of the rusted waterproof casing should be coated as soon as possible.
1. Be familiar with engineering drawings and analyze how to make and install embedded casing before manufacturing casing.
2. Determine the length of casing according to the building plan, structural pipe surface and building elevation. Then according to the water supply and drainage plan and detail drawing, and refer to the building atlas to make.
3. Pay attention to the water supply and drainage casing during manufacturing. After installation, the branch pipe should be flush with the wall, beam and column.
4. The steel casing must be welded thoroughly with the water stop flange ring.
5. After the electrical equipment casing is installed, both sides of the branch pipe should extend 5cm-10cm out of the wall, beam and column.
Making Flexible waterproof casing The thickness of flange ring and casing shall meet the requirements. Both sides of wing ring of waterproof casing shall be welded thoroughly on both sides, and the welding shall be smooth, smooth and smooth, without weld bead, bubble and crack. After welding, clean up the welding penetration, and then brush the anticorrosive paint on it twice. During installation, both sides of the casing pipe are clamped and fixed firmly on the three sides of the construction reinforcement, and can not be tilted.
Spiral welding or straight seam misalignment grinding and polishing of waterproof casing pipe end tail: the screw welding or straight seam misalignment within 11mm scope of pipe end tail shall be polished and polished, and connected gently to prevent stress.
If it is found that the waterproof casing is rusty, rust prevention treatment shall be carried out immediately. The surface of the rusted waterproof sleeve shall be coated as soon as possible, generally within 4 hours. In sunny days and under all normal air standards, it shall not exceed 24 hours. The architectural coating used shall meet the requirements of the sample drawing. The number of overlapping layers, the thickness of each layer, the interval of coating step by step, the preparation method of architectural coating and the common problems in coating shall be carried out according to the requirements of design documents or manufacturer's instructions. Within the scope of 200 mm on both sides of the circumferential weld, the top coat of the production workshop which is not easy to have a negative impact on the welding quality during welding shall be coated to prevent the weld from rusting. In order to improve the service life of waterproof casing, if not specially required, it is necessary to spray anti-corrosion solution.
If there is erosion inside the casing, it must have a certain impact on the water body. According to the different thickness of the pipeline material and time are affected. For a long time, the organic chemical substances in the water will be gradually consumed, which will further increase the number of bacteria and cause more and more erosion to the pipeline. In this way, the service life of the waterproof casing will undoubtedly be reduced. Therefore, the rust of the pipeline has a certain relationship with the service life of the waterproof sleeve, and the solution of spraying anti-corrosion is particularly important.