The following are some key points to ensure the installation quality of ventilation and smoke exhaust pipes in five-star hotels:

1. Precise design and planning: Ensure detailed and accurate design drawings, careful planning of pipeline layout, direction, size, etc., taking into account various functional requirements and space constraints.

2. Selection of high-quality materials: The use of high-quality air duct materials that meet the standards, such as galvanized steel, etc., to ensure its strength, corrosion resistance and tightness.

3. Strict construction technology: The construction personnel should have professional skills and operate in accordance with the standard process flow, including cutting, connecting, fixing and other links to ensure the fine process.

4. Strong pipe connection: The use of appropriate connection methods, such as welding, flange connection, etc., to ensure that the connection is tight and firm, no air leakage phenomenon.

5. Stable installation of the bracket: reasonably set the pipe bracket to ensure its stable installation, which can effectively support the pipeline and prevent shaking and deformation.

6. Seal treatment in place: Seal the key parts of the pipeline, such as the splicing place and through the wall, to prevent air leakage.

7. System debugging and testing: After the installation is complete, a comprehensive system debugging is carried out to test whether the parameters such as wind pressure and air volume meet the requirements, and timely rectification of the problems found.

8. Cleaning and maintenance: Keep the interior of the pipeline clean during the construction process to avoid the entry of debris, and carry out regular maintenance inspection after installation.

9. Quality supervision and acceptance: Set up strict quality supervision links, and carry out phased acceptance in accordance with relevant standards to ensure that the quality of each link is up to standard.

10. Cooperate with other projects: cooperate closely with electrical, fire and other related projects to avoid mutual interference and influence.