A, stainless steel waterproof casing classification

Stainless steel flexible waterproof casing can be divided into: stainless steel rigid waterproof casing and stainless steel flexible waterproof casing two kinds. Pipeline through the floor roof embedded rigid waterproof casing, can effectively prevent the floor leakage, in the building water supply and drainage engineering is widely used; Tap, factory building, civil air defense works, sewage water treatment plant of clear water reserviors, sewage pool need through concrete through pipelines, and need to be able to get up, you will need to flexible waterproof casing, the two kinds of waterproof casing when used in contact with the corrosive medium, the designers should according to the characteristic of medium and the anti-corrosion requirements, choose appropriate use of corrosion resistant materials - 316 l stainless steel materials, 304 stainless steel material, 201 stainless steel material, and so on.

Two, stainless steel waterproof sleeve specifications

1. When the water surface is corrosive medium, the sealing material can be used to plug the gap, as shown in 02S404 National Standard Atlas "Flexible waterproof casing (type B) installation drawing";

2. In the case of non-concrete walls where the casing passes through the wall, concrete walls should be partially used, and the pouring range should be 200 larger than the diameter of the wing ring (D5), and the casing should be poured into the wall at one time;

3. The thickness of the concrete wall at the pipeway should not be less than 300, otherwise one side or both sides of the wall should be thickened, and the diameter of the thickened part should be at least D5+200;

4. The weight of casing shall be calculated as L=300. If the wall thickness is greater than 300, it shall be calculated separately.

Two, stainless steel waterproof casing material

Stainless steel waterproof casing is 304 stainless steel and 316L stainless steel raw material production, both ends should be mechanical cutting mouth (such as, with no tooth saw, etc.), stainless steel waterproof casing is mainly used in a variety of corrosive media pipeline, generally such as chemical pipeline and chemical reaction pool, corrosive sewage treatment pipe.

Generally according to customer requirements to choose the material, 304 is a kind of universal stainless steel, high temperature resistance is better, the general use of temperature is less than 650℃. 304 stainless steel has excellent rust resistance and corrosion resistance and good intergranular corrosion resistance. Of course, if the requirements are more strict, you can also use 316L stainless steel to produce waterproof casing. 316L adds Mo, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, which can be used under harsh conditions. Excellent work hardening (non magnetic).

National standard flexible waterproof sleeve for chemical plant matters needing attention

In the past flexible waterproof casing sales we found that the chemical plant in the selection of flexible waterproof casing when the use of national standard flexible waterproof casing, and in the material and process will have special requirements, according to the medium of the pool in use should pay attention to several matters.

First of all, the flexible waterproof casing is generally used in the import and export sealing facilities in accordance with the requirements of the Atlas, but when in real use, many customers and friends generally do not set asbestos silk sealing paste in the face of the water, so the seepage prevention mainly relies on the rubber sealing ring at the exit of the flexible waterproof casing. Chemical plant pool is different from other pools in that the medium in the pool may have certain corrosion, which requires us not only to change the material of the casing body, but also the rubber sealing ring should be made of acid, alkali and corrosion resistant material. GB flexible waterproof sleeve can be used for more than 50 years after correct installation.

The wall thickness of flexible waterproof casing is proportional to its bearing capacity:

The waterproof performance of flexible waterproof casing is stricter than the rigid waterproof casing. Generally, the flexible waterproof casing is used in strict requirements for waterproof performance. The three elements should be considered when the flexible waterproof casing is worn through the wall:

1. The wall where the casing passes through the wall shall be converted to concrete wall in case of non-concrete wall. The range of co-pouring concrete shall be 200mm larger than the diameter of the wing ring, and the casing shall be poured into the wall at one time.

2, flexible waterproof casing is generally suitable for the pipeline through the wall by vibration or have strict waterproof requirements of the structure.

3. DN size and wall thickness size in the table can be produced according to user's needs. Please indicate diameter, pipe outer diameter and wall thickness when ordering.