How can I fabricate light pipes for daylighting economically in India?

Question

This is to provide additional daylighting in dark rooms.

Answer 1

Light pipes basically need a transparent waterproof roof cover and a flexible metal tube that is reflective on the inside fed into the room where light is required.

Flexible chimney flue piping should work reasonably.
Add a fresnel lens or similar on the roof oriented to maximum sun for your latitude should increase the light collection
A difuser pannel to the ceiling opening to spread the light reflected down the pipe.

Answer 2

Unless you have the necessary machinery to manufacture fluorescent tube lights, you can't do it. It requires a lot more than desire to make a light bulb!