When buying waterproof casing, first of all, you need to figure out whether you need to buy rigid waterproof casing or flexible. The two types of waterproof casing are different in terms of use, characteristics and properties. According to the construction drawings and engineering requirements, determine the use of rigid casing or flexible casing, and select the quality standard, national standard or non-standard. Large key projects such as water plants, sewage treatment plants, chemical plants, power plants, and municipal projects have strict requirements and must use national standard flexible waterproof casing . Civil or small construction projects can consider using non-standard flexible waterproof casing to reduce costs. , saving project cost.
Flexible waterproof casing is divided into two categories: national standard and non-standard. Standards refer to materials selected and produced according to the Ministry of Construction 02S404 or 02S312 specifications. The thickness of the flange is the thickness of the wing ring, which has strict requirements on the thickness of the pipe wall. Manufactured according to planning standards. The non-standard indicators meet the requirements of the shape and approximate structure of atlas . The flange thickness, wing ring thickness, pipe diameter and pipe wall thickness are reduced, so the ingredients are reduced and the cost is reduced. Strictly speaking, these are substandard products. Of course, the thickness and walls of the pipe are slightly reduced. Project costs can be reduced without impacting the application. However, performance will be affected to some extent.
The installation location of waterproof casing should avoid settlement joints, expansion joints or two structures (buildings) within a short distance. If the waterproofing casing penetrates the wall when encountering a non-concrete wall, it should be replaced with a concrete wall. The pouring range should be 200 larger than the wing ring diameter (D5). The casing must be fixed to the wall once. When selecting or processing waterproof casing, the design conditions and installation requirements of the pipeline should be met. The length design of the waterproof casing can be modified according to the engineering construction requirements.
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