1. Use scope: waterproof casing is applicable to civil and general industrial and municipal water supply and drainage engineering structure (building) structures.

2. The classification of applications: waterproof structure is divided into flexible waterproof casing pipe type (A/B), rigid waterproofing casing (A/B/C) and rigid waterproofing wing ring three types.

1) flexible waterproof casing is suitable to the area with seismic requirements, the pipe wall under vibration and expansion deformation, or have strict waterproof demand structure wall.Ⅰ type sealing ring is suitable for general waterproof requirement, Ⅱ type is suitable for the relatively tight waterproof requirement.Applicable temperature range: - 20 ℃ ~ + 80 ℃.When the wall tube connected to the booster pump or equipment in and out of line, should be in a setting link flexible joint.

2) rigid waterproofing casing are applicable for pipe wall don't inherit the pipeline vibration and expansion deformation of structure (building) structures.For areas with earthquake fortification requirements, such as using rigid waterproofing casing, should be in the wall or on the building's exterior wall pipe flexible connection thereto.Suitable for steel pipe, type B, type C is suitable for the ductile iron pipe and cast iron pipe;If use rigid waterproofing wing ring, should be in the wall or on the building's exterior wall pipe nearby flexible connection Settings, type A is suitable for steel pipe.

3. Waterproof casing used in contact with the corrosive medium, the design should be based on dielectric properties and anti-corrosion, choose suitable corrosion materials separately;

4. Waterproof casing selection or processed, should meet the requirements of working condition of pipeline design and installation, when necessary, the waterproof casing wear wall thickness, axial thrust, etc should be confirmed by the structural engineer;

5. Waterproof casing installation location should avoid as far as possible settlement joint, expansion joint, or two more close structure (building) structures.When the special needs, the structural engineer must choose;

6. When the wall tube and outer diameter of material such as beyond the scope of atlas, should pay attention to the structure of waterproof casing, size and the gap in the packing and so on to make the necessary adjustment and correction;

7. Used for drinking water pool of waterproof casing, the sealing ring, sealing paste, protective coatings shall confirm the non-toxic