The water supply riser set in public places should be laid in the pipe shaft. The water supply riser of the exposed layer shall be close to the corner, wall edge or column near the sanitary ware with large water consumption. When pipelines and other pipelines are laid in parallel with the trench (frame), they shall be arranged along the side of the trench (frame). When the pipes are laid in parallel, they shall not be laid above the hot water or steam pipes. When crossing with other pipelines, corresponding protective measures shall be taken.

When the aluminum alloy pipe passes through the floor, the sleeve must be installed. The sleeve may be a plastic tube. Metal sleeves must be used when passing through the roof. The casing shall be 50 ~ 100mm higher than the ground and roof, and strict waterproof measures shall be taken. Waterproof sleeves shall be set for pipes passing through the exterior wall of the basement. The pipes arranged on the surface of the floor shall have positioning dimensions and shall be laid along the wall. In case of possible damage, local pipes shall be protected with casing.

When the indoor concealed aluminum alloy pipeline needs to contact with cement or corrosive liquid exists outside the pipeline for a long time, protective measures such as paint or asphalt can be taken on the outer surface of the pipeline. When the pipeline is buried, the outer surface of the pipeline shall be coated with asphalt (3 oil and 2 cloth) for anti-corrosion treatment.

Axial distortion of aluminum alloy pipes is strictly prohibited, and forced correction is not allowed when passing through walls or floors. The pipeline shall not be laid in the flue, air duct or drainage ditch; Do not pass through the transformer room. Exposed water supply pipes shall not pass through bedrooms and storage rooms.