How to choose the model of the waterproof casing

This needs to be selected by the application site, such as B-type rigid waterproof casing is suitable for cast iron and ductile iron pipes; Flexible waterproof casing type A is used in the interior wall of the building, and type B is used in the exterior wall of the building. In addition, because the length of different types of flexible waterproof casing will be different, therefore, it is also necessary to pay attention to the selection, for example, 250mm concrete wall should use 250mm long waterproof casing, of course, when purchasing, you can also tell the manufacturer that it is DN100, and you can do it with 250mm long. Or tell the manufacturer that the wall thickness is 250mm.

The length of the rigid waterproof casing refers to the distance between the two ends of the nozzle, which is generally equal to the thickness of the wall, but when passing through the roof of the floor, it will exceed the ground by 20-50mm according to the actual need.

Welding of waterproof casing:

1. The cutting and beveling of weldments should be done by mechanical methods, or plasma arc processing methods, and it is necessary to remove the oxide scale on the surface of the groove and the outer surface layer that affects the quality of the joint, and the uneven places should be polished flat.

2. Before the weldment group, the groove and its inner and outer surface should be cleaned of oil, paint, scale, rust, burrs and galvanized layers within the range of not less than 10 mm, and there should be no cracks, interlayers and other defects.

3. When the butt weld of the flexible waterproof casing pipe or waterproof casing pipe fittings is aligned, the inner wall should be flat, and the amount of inner wall misalignment should not exceed 10% of the thickness of the pipe wall, and should not be greater than 2mm.

4. Within 100mm on both sides of the groove of stainless steel waterproof casing weldments, welding spatter should be avoided before welding.

5. The selection of welding wire should be comprehensively determined according to the chemical composition, mechanical properties of the base metal, crack resistance of the welded joint, use conditions and construction conditions.

6. It is forbidden to start the arc and test the current on the surface of the base metal outside the groove, and the arc should be avoided from scratching the base metal. 02S404 waterproof casing, expansion joints, ventilation casing, flexible waterproof casing, how to effectively stop leakage.

7. In order to ensure the penetration of the stainless steel waterproof casing with a wall thickness of more than 3mm, the counterpart gap is slightly larger, and the welding wire and wire diameter should be properly filled at this time.

8. In order to ensure the internal quality of the weld, the inside of the pipe is protected by argon.

9. The weld after welding is also roughly washed and passivated by nature, so that the weld has a similar luster to the base metal, and at the same time, after the passivation film is generated, the weld has the ability to resist oxidation.

Rigid waterproof casing; Type A, B, C, Type A is suitable for steel pipes. Type B is suitable for cast iron and ductile iron pipes. Flexible casing is divided into; Type A and Type B are used in the interior walls of buildings, and Type B is used in the exterior walls of buildings.

The rigid waterproof casing is welded on the outside of the steel pipe with a waterproof wing ring, the flexible waterproof casing is welded on the outside of the steel pipe with 3 wing rings, there are 4 screw buckles on one side, a baffle is welded inside plus a cross circle, and a flange is made outside, 4 stud bolts are added, and a steel pipe is welded on the head.

The model selection of the waterproof casing is related to the material of the working pipe. If you're sure it's right to choose, that's fine. However, it is best to communicate with the designer himself to avoid water leakage and other consequences caused by construction errors.

Hope the above is helpful to you, how to buy can be further contacted.

Selection of waterproof casing specifications and models:

1) The water supply and drainage pipes that penetrate the floor slab and the inner wall are made of steel casing or iron casing. For example, the tube sleeve of DN100 is DN150; Among them, the kitchen and bathroom drains do not make casing when they pass through the floor slab.

2) when the pipe passes through the wall and the floor slab and is provided with the metal casing (external wall) or the plastic casing, the casing that is installed in the floor slab, the top of the casing should be higher than the decorative ground 20mm, 3) the casing that is installed in the living room and the kitchen, its top should be higher than the decorative ground 50mm, and the bottom of the casing should be level with the bottom surface of the floor slab;

4) the casing installed in the wall, the two ends of which are level with the finish, and the gap between the casing and the pipe passing through the floor slab should be filled with flame retardant dense material and waterproof ointment, and the end face is smooth;

5) The gap between the wall casing and the pipeline should be filled with flame-retardant dense materials, and the end face should be smooth, and the pipe connection should not be located in the casing.

Commonly used waterproof casings are divided into two types: rigid and flexible. It should be noted when selecting that the waterproof casing is manufactured according to the S404 standard atlas developed and designed by the Institute of Building Research.

The rigid waterproof casing is suitable for the installation of the waterproof casing of drinking water pools, and is carried out after the completion of the asbestos cement filling, and when filling the sealing paste, it should be ensured that the contact surfaces in the seam are free of rust, patent leather, dirt, and clean and dry. Generally, it is suitable for structures that are subject to vibration or have strict waterproof requirements where the pipe passes through the wall; If the wall is not concrete, the concrete wall should be used instead, and the casing must be solidified in the wall at one time; Waterproof casing is used in construction, chemical industry, steel, tap water, sewage treatment and other units.

Waterproof casing classification: flexible waterproof casing, rigid waterproof casing, steel flexible waterproof casing, both sides of the protection rigid airtight casing, 04FS02 flexible airtight casing, extended flexible waterproof casing, stainless steel waterproof casing, etc.

The water-stopping casing is also called the wall casing, the wall pipe. The flexible waterproof casing is generally suitable for structures where the pipe passes through the wall and is subject to vibration or strict waterproof requirements. Waterproof casing is divided into rigid waterproof casing and flexible waterproof casing.

The two are mainly used in different places, flexible waterproof casing is mainly used in civil air defense walls, pools and other places with high requirements, and rigid waterproof casing is generally used in basements and other places where pipelines need to wear pipes.

Purpose:1Protect the pipeline from being damaged 2Convenient for installing and repairing pipelines 3The casing of the water room also has a certain effect of preventing water from seeping, flowing and flowing to the lower layer 4Prevent cross-contamination.

Note: According to the national standard 02S404 waterproof casing atlas DN50 waterproof casing wall thickness is, the waterproof casing is generally 4 mm is about the same

The use of waterproof casing brings a lot of convenience to the construction project to ensure that there will be no water leakage in the later stage, but it is necessary to pay attention to the details of the use of the waterproof pipe skin Zheng elimination sleeve, so as not to bring trouble. So what are the specifications and models of rigid waterproof casing, and what should be paid attention to in the use of rigid waterproof casing, do you know it? Now let's take a look.

1. What are the specifications and models of rigid waterproof casing?

There are three specifications and models of rigid waterproof casing, namely A-type pipe, B-type pipe, and C-type pipe. Among them, the shape of type A and type B rigid waterproof casing is very similar, but at the bottom of type B casing, there will be an additional retaining ring, so as to enhance its sealing, and the service life is also very long.

2. What should be paid attention to in the use of rigid waterproof casing?

1. The use of rigid waterproof casing requires knowing some details. If it is in the first fortified area, when building a building, it is necessary to install the waterproof casing in the pool wall, or set up a flexible connection on the outer wall of the building, so as to ensure the normal use in the later stage and not easy to cause unnecessary trouble.

2. Before the pipeline passes through the wall, it is necessary to look at the base layer of the wall, so as to choose the appropriate way to pass through the wall. If the wall is made of non-concrete material, it needs to be changed to a concrete wall, and the waterproof casing needs to penetrate the inside of the wall at one time, and the filler inside the pipe needs to be compacted, so as to reduce the probability of burning problems in the later stage.

3. At the position where the wall needs to be penetrated, it is necessary to check whether the thickness of the concrete meets the standard, which shall not be less than 200, if the thickness of the concrete is lower than this value, the wall needs to be thickened appropriately. Moreover, the buried pipeline needs to be welded firmly, so as to avoid unnecessary trouble.

What are the specifications and models of rigid waterproof casing, and what should be paid attention to in the use of rigid waterproof casing, I will introduce it here first, do you understand it? There are several specifications and models of rigid waterproof casing, and it is necessary to confirm clearly before choosing to ensure that it can be used normally in the later stage.

Introduction to waterproof casing;

Waterproof casing is also known as wall casing, wall casing. The flexible waterproof casing is generally suitable for structures that are subject to vibration or have strict waterproof requirements when the pipe passes through the wall, and after local processing of the casing, the outer wall is coated with a primer (the primer includes camphor or cold bottom oil). The waterproof casing is divided into rigid waterproof casing and flexible waterproof casing.

The main difference between the two is that the main uses are different, the flexible waterproof casing is mainly used in places with high requirements such as civil air defense walls and pools, and the rigid waterproof casing is generally used in basements and other pipelines, which need to be erected through pipelines.

Waterproof casing structure form.

According to the structural form, the waterproof casing can be divided into three categories: flexible waterproof casing, rigid waterproof casing and rigid waterproof wing ring. The flexible waterproof casing is generally used for the water inlet of various pumps on the pool, and a small amount of deformation is allowed after installation, the flexible waterproof casing has a wing ring exposed on the outer wall, the gap between the wing ring and the outer wall is filled with flexible caulking material, there is a wing ring in the middle of the casing, and the inner wall pressure plate is connected with the flange through the nut, the stud is connected with the flange, and the flange gland is waterproof. The gap between the casing and the through-wall pipe is filled by retaining rings, seals and soft packing; The rigid waterproof casing is often used in the basement exterior wall and pool, and such places need to have pipes through the wall to facilitate the waterproofing of the wall; When the rigid waterproof casing is a steel pipe with a wing ring, it is installed in the wall, which is used for general pipelines to penetrate the wall, which is conducive to the waterproofing of the wall.

waterproof casing selection;

For the selection of waterproof casing, if the waterproof performance of both sides of the wall is considered, only the penetration of the pipe is considered, and the waterproof performance of both sides of the wall and the displacement and deformation of the pipeline are not considered, the rigid waterproof casing can be selected. When using waterproof casing products, only by using it in strict accordance with the use method can the overall quality of the project be improved and its economic benefits realized.

What is a waterproof casing, a waterproof casing is a protective casing set on the outside of the pipeline when the pipeline passes through the railway, road, street, etc., in order to prevent the pipeline from being crushed by the load. Waterproof casing is divided into rigid waterproof casing and flexible waterproof casing. The rigid waterproof casing is a steel pipe with a wing ring; In addition to the outer wing ring, the flexible waterproof sleeve also has a retaining ring and the like inside.

The standard length of the flexible waterproof sleeve is 300mm. However, the actual construction environment is more complex, and different construction environments require different lengths of flexible waterproof casing, and the length of the casing is generally determined according to the thickness of the wall.

If the casing penetrates the wall, if it encounters a non-concrete wall, it should be changed to a concrete wall, which should be larger than 200mm, and the casing must be poured into the wall. The concrete wall at the pipe penetration should not be less than 300mm, otherwise one side of the wall should be thickened or both sides should be thickened. The diameter of the thickened part should be at least 200mm larger than the diameter of the wing ring.

The weight of the flexible waterproof casing is calculated as l=300. If the flexible waterproof casing penetrates the wall in case of a non-concrete wall, the concrete wall should be partially replaced, and its pouring range should be 200 times larger than the diameter of the wing ring, and the casing must be poured on the inner wall at one time.

Flexible waterproof casing is generally suitable for structures that are subject to vibration or have strict waterproof requirements where the pipe passes through the wall; Rigid waterproof casing is generally suitable for structures that require general waterproofing where the pipe passes through the wall;

The rigid waterproof casing is a steel pipe with wing rings, which is installed in the wall and is used for general pipelines to penetrate the wall, which is conducive to the waterproofing of the wall; In addition to the external wing ring, the flexible waterproof casing also has a retaining ring and the like inside, and the flange inner wire, which is sold in complete sets, and can also be processed by itself for pipes that need to absorb shocks, such as when the pipe connected to the water pump passes through the wall.

Flexible waterproof casing is generally suitable for structures that are subject to vibration or have strict waterproof requirements where the pipe passes through the wall;

There are regulations for the inner and outer diameters of the flexible waterproof sleeve and the outer diameter of the flange. There are also standards for what kind of steel pipe to wear and the indicators of the steel pipe. The flexible waterproof casing is clearly stipulated in the atlas, and the length can be set according to the needs of the project.

The length of the extended part is generally determined according to the needs of special projects, mainly according to the thickness of the wall.

Dimensions and weight gauges of flexible waterproof casings.

2) When the pipe passes through the wall and the floor slab to set up a metal casing (external wall) or a plastic casing, the top of the casing installed in the floor slab should be 20mm higher than the decorative ground;

3) The top of the casing installed in the bathroom and kitchen should be 50mm higher than the decorative floor, and the bottom of the casing should be level with the bottom surface of the floor;

4) the casing installed in the wall, the two ends of which are level with the finish, and the gap between the casing and the pipe passing through the floor slab should be filled with flame retardant dense material and waterproof ointment, and the end face is smooth;

1.Why use a rigid waterproof casing In order to prevent water from leaking out of the side wall, the general pool requires that the water pipe on the pool should be installed with a waterproof casing, and a water-stop wing ring is set on the side, so the gap between the casing and the water pipe will still leak? Is there a rubber ring connection between the casing and the water pipe?

How is this waterproof casing done in construction? 2.The function and function of the rigid waterproof casing casing through the wall (pool, board, etc.).

There are two types: rigid and flexible. After installation, it is allowed to have the flexibility of --- with deformation; It is not allowed to have a deformation - rigidity. The main reason is that the place of use is different, the flexible waterproof casing is mainly used in the civil air defense wall, pool and other places with high requirements, and the rigid waterproof casing is generally used in the basement and other pipelines that need to be worn through the pipeline.

3.The difference between rigid waterproof casing and flexible waterproof casing Rigid waterproof casing is a steel pipe with a wing ring (an annular sleeve made of steel plate on the steel pipe), which is installed in the wall (mostly concrete walls), which is used for general pipelines to penetrate the wall, which is conducive to the waterproofing of the wall; In addition to the external wing ring, the flexible waterproof casing also has a retaining ring and the like inside, and the flange inner wire, which can be sold as a complete set, and can also be processed by yourself for pipelines that need to absorb shocks, such as when the pipe connected to the water pump passes through the wall. That is to say, if the waterproof performance of both sides of the wall is considered, a flexible waterproof sleeve should be selected; If you only consider the penetration of the pipeline, and do not consider the waterproof performance on both sides of the wall and the displacement and deformation of the pipeline after penetrating the wall, you can choose the rigid waterproof casing.

4.The use of rigid waterproof casing Rigid waterproof casing is suitable for structures (buildings) that do not bear the vibration and expansion deformation of pipelines at the pipe through the wall, and is suitable for the renovation of the structure (building) or pipeline installation before the structure (building) or pipeline at the wall penetration. For areas with ** fortification requirements, such as the use of rigid waterproof casing, should be set up on the pipe into the pool wall or the outer wall of the building near the flexible connection.

Type A is suitable for steel pipes, and types B and C are suitable for ductile iron steel pipes and cast iron pipes. 5.Rigid waterproof casing description 1, rigid waterproof casing, suitable for cast iron pipes, also suitable for non-metallic pipes, but should be corrected according to the thickness of the pipe wall used in the pipe.

3. After the processing of the wing ring and the steel casing is completed, the primer is brushed on the outer wall (the primer includes camphor or cold base oil). 4. The weight of the material listed in the casing size table is the weight of the steel casing (the l value of the casing length is calculated according to 200mm) and the wing ring. The steel casing and wing rings are made of A3 material, and the T42 electrode is welded.

5. The wall where the casing passes through the wall, if it encounters a non-concrete wall, the concrete wall should be used instead, and the concrete range should be poured into the wall, and the casing should be 200mm larger than the diameter of the wing ring (D4), and the casing must be poured into the wall at one time. The packing inside the casing should be tightly tamped. 6. The thickness of the concrete wall at the waterproof casing should not be less than 200mm, otherwise one or both sides of the wall should be thickened, and the diameter of the thickened part should be at least 200mm larger than the diameter of the wing ring (D4).