For example, for staircases.

The mirror surface of the pipe can be observed both outside and inside. If the pipe has an external mirror surface, then it basically finds use for decorative purposes. For example, for staircases. Pipes that have an internal mirror surface are used for completely different purposes. They are already widely used in the food industry, their use is under the purpose of «dairy pipes», they find here the use of dairy evaporators in the design.