Waterproof protective casing pipe is not damaged pipeline installation, and maintenance of water pipes are accessible to the casing of the room, there is a certain degree of water seepage, flow, drip to prevent the underlying action, but also can prevent cross-contamination, so wear a floor at plus 02S404 waterproof casing and what significance does it have? First, the pipeline through the floor, and some construction workers to facilitate easy, not civil formwork, were simply blocked after filling the holes with cement mortar, combined with hard PVC pipe exterior is smooth, not very strong bond with the concrete, so it is likely to cause serious leakages floor, affecting normal household use. The correct approach is: pre-cased, pipeline installation should end with civil conduct formwork, and should be used at the second C20 fine aggregate concrete pouring pound dense. After pouring over, screed or a combination of surface construction, masonry around the pipe should have a thickness of not less than 20 mm, a width of not less than 30 mm of water blocking circle. Secondly, the pipeline crosses the walls and floor and a metal casing (facades) or plastic casing, casing installed in the floor of the top floor should be higher than 20 mm decoration, bathroom and kitchen installed in the casing at the top should be higher than 50 mm decorative floor and the bottom of the casing should be level with the bottom surface of the floor; casing installed in the wall at both ends and finishes with the flat across the floor between the casing and piping applications retardant dense gap infill material and waterproof ointment and smooth end face; the gap between the dense material is appropriate fire wall bushing and the pipe infill and face should be smooth interface pipes shall not be located within the casing. Also known as waterproof casing wall bushing, wall pipe; flexible waterproof casing pipe through the wall are generally applicable to the Department by vibration or water tight structures required after the sleeve portion of the processing is completed, both in its outer wall brush primer again (including primer Zhang Dan or cold base oil). The outer layer of corrosion by design. Casing wear wall at the wall, in case of non-concrete walls should use concrete walls, its scope should fly pouring concrete ring diameter (D6) large 200mm, and must be poured solid with the casing wall. Worn concrete wall thickness of the tube at not less than 300mm thick or should make one side or both sides of the thick walls. The minimum diameter of the thickened portion should fly ring diameter (D6) large 200mm. The material is based on the weight of the casing wall thickness is 300mm L calculations, such as wall thickness greater than 300mm should be calculated separately. The sleeve member is welded materials, materials with A3, T42 welding. Finally, wearing a floor at plus rigid waterproof casing pipe at the time of installation, the space utilization of a large range operator can freely use. Users check after repair, and replacement of the pipe (achieve useful life, etc.), an operator space is very limited. Only use pipe supports, pipe and casing temporarily fixed, the appropriate action. Meanwhile, the casing is set, and also avoid the replacement pipe for the destruction of the living room decoration, if no casing, performing the above operations, will be in the pipeline over the wall of the site, resulting in damage to the wall.