Lines, UV Mapping doubts.

[micheus]

c-sanchez, just in case you are lazy to try the approaches. (my turn, )
- The left column your probable initial mesh;
- The middle column the presented mesh;
- The right one is your mesh with hard edges set (easy way is use Auto Smooth as suggested by Radi).
The rows are flat shader; smooth shader using One light; smooth shader using Two lights;