Waterproof casing is also called wall-wall casing. Its implementation standards are based on the S312, 02S404 standard atlas developed by the Building Science Research Institute. The exterior must have epoxy paint, which can prevent oxidation in the air, if the internal media is drinking water, pay special attention to the installation: after filling asbestos cement is completed, when filling the sealant, it should ensure that each The contact surface is free from rust, paint, dirt, and is clean and dry. Next Xiaobian introduced waterproof casing installation and waterproof casing manufacturing process.
Waterproof casing installation
1. Be familiar with the drawings and analyze how to make and install the pre-embedded casing before machining the casing.
2. When the drain and drain sleeve is manufactured, care should be taken to ensure that the surface of the nozzle and the wall, beam, and column are flat after installation.
3. The steel casing must be fully welded around the sealing wing ring.
4. The slope of the pipeline should be uniform and there should be no inverted slope. The slope of the pipeline at the exit of the roof should be increased appropriately.
5, check all pipe fittings for cracks, with or without trachoma, the thickness of the pipe wall is uniform.
6. Before use, the pipeline should be observed for appearance, irrigation and flushing of the outer wall to check for cracks and blisters.
7. Check if all sockets are in place, firm and dense.
8. Pipeline installation shall be provided according to the construction acceptance standards.
9. Determine the length of the casing according to the plan of the building, the structural pipe plan and the elevation of the building. According to the water supply and drainage plan and large sample map, and reference standard atlas to produce.
10. When making the waterproof casing, the thickness of the wing ring and casing should meet the requirements of the specification. Both sides of the wing ring of the waterproof casing should be fully welded on both sides, and the weld seam should be full, smooth, smooth, no slag, no air bubbles, no Cracks and other phenomena. After the welding is completed, the welding slag should be cleaned and the anti-rust paint should be applied more than twice. During the installation, the two ends of the casing should be reinforced and fixed by three or more sides of the casing and must not be skewed.
Waterproof casing manufacturing process
1, according to the construction drawings check the structure of the wall, plate thickness to determine the length of the casing, casing diameter than the pipe diameter 2 stalls.
2. Use a steel rule to measure the length and draw the cutting line on the pipe. For the pipes below DN150, you can use the cutting machine to cut. Use DN200 or above for the air type plasma cutter, pipe cutter or gas cutting to cut. The galvanized steel pipe is forbidden. After using thermal cutting, the edge of the incision, slag, and burr should be removed after the casing is cut, and the flatness of the incision should be reviewed. If there is a horseshoe mouth, oblique mouth, etc., it needs to be polished.
3. Select the steel plate with acceptable thickness, first punch out the center point on the steel plate with “punchingâ€, and then use the compass to draw the inner ring line of the wing ring as the radius of the inner ring of the wing ring according to the outer diameter of the sleeve/2+1mm. Then, according to the specification, the width of the wing ring is used to draw the outer ring line of the wing ring.
4. When using a plasma cutting machine or gas cutting, attention should be paid to fire prevention. The processing site must be equipped with qualified fire-fighting equipment.
5. Before the assembly of the casing and the wing ring, draw the wing ring installation line on the casing. Place the polished wing ring on the scale mark of the pipeline. Fix the spot first with electric welding, and use the square ruler to adjust the vertical of the wing ring and the pipeline. After the degree is fixed by 3 points at an angle of 120° apart. The rigid waterproof casing is a middle wing ring, two wing rings are arranged in the middle and the water-facing surface of the flexible waterproof casing, and flanges and flange glands are arranged on the back water surface.
6, waterproof casing welding should be concentrated welding by a professional welder to ensure the quality of welding and the appearance of the finished product.
7. After the welding is completed, correct the verticality of the wing ring and the pipe. After the derusting, brush the interior of the bushing with two anti-rust paints.
8, reference materials "02S404 waterproof casing" standard atlas.
Editor's summary: About waterproof casing installation and waterproof casing manufacturing process introduced here, I hope to be helpful to everyone. If you want to know more about yourself, you can follow the information on this site.
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