1. When processing bent pipes, its parameters must be determined during application, so that the appearance, size, and mechanical properties of the product can only be produced after passing the inspection. When processing bent pipes, there must be no dimensional deviation.

2. All products need to be marked during use, and the format used and the location to be marked must comply with all its regulations.

3. All pipe openings need to be protected with pipe caps so that the product will not fall off during transportation.

4. Manufacturers should provide inspection reports and production reports for all products, and these information should also be kept in a timely manner.

5. Construction personnel must wear uniform work clothes and signs, and clear project names and construction units should be set up on site. The start date of this project and the approval number of the construction permit need to be well preserved.

6. The design requirements of the site need to be based on the installation of electrical facilities, and any arbitrary wiring or connection of electricity is prohibited. All construction sites need to maintain their night lights bright.

7. The equipment used needs to enter and exit according to the planned location and route, and must not be walked arbitrarily.

8. All materials on site need to be neatly and centrally placed, and must not be placed arbitrarily.

9. There is now a need to do a lot of security work, such as protecting the surrounding facilities. Some non working personnel are prohibited from entering, and the site needs to be equipped with some fire-fighting equipment according to their requirements or circumstances.

10. After all construction is completed, it is necessary to organize and clean up the site, and some remaining materials need to be removed from the site.