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[installation problems of stiffness waterproof sleeve]

1. Carefully grasp the construction drawing and analyze how to make and install the embedded casing before making the casing.

2. Pay attention to the construction of water supply and drainage sleeve during manufacturing. After installation, the branch pipe should be flat with the opening face of the wall, beam and column.
3. The steel casing shall be welded to the periphery of the hydrofoil ring.

4. The pipe slope should be uniform, no reverse slope is allowed, and the pipe slope at the entrance of the slope roof should be expanded as far as possible.

5. Check whether all pipe fittings have clearance, sand hole and wall thickness is uniform.

6. Before the pipeline is used, the appearance, irrigation and surface washing should be observed to check whether there is any gap and sand hole.

7. Check whether all socket sockets are immediate, firm and compact.

8. Anti-seismic support and hanger shall be set up for pipeline installation according to the code for acceptance of construction works.

9. Determine the length of the casing according to the building plan, structural pipe plan and building elevation plan. Then according to the building drainage plan design and large sample map, and reference to the building atlas to make.

10. When making the waterproof casing, the thickness of the wing ring and the casing shall meet the specified requirements. Both sides of the wing ring of the waterproof casing shall be fully welded, and the electric welding shall be smooth, smooth, smooth, without welding nodules, no bubbles, no cracks, etc. After welding, the welding through clean and clean, and then brush twice in the anti-corrosion paint. During installation, the casing should be clamped and fixed firmly on both sides of the casing with construction steel in three sides, and should not be skewed.