A downspout would be very simple to make as well just simply glue in two end caps and a 3 x3 x1 5 tee to your 3 pvc pipe.
Diy pvc pipe rain gutters.
They cut a narrow slit along the length of the pipe just wide enough for the corrugations to fit inside the pipe.
They say it can t be done but it sure can just watch and see.
In my wife s village near madang papua new guinea they always use pvc pipe for guttering on corrugated iron roofs.
Turn the handle on the ball valve that is located on your pvc gutter cleaner to the off position.
Clear your gutter of debris by starting near.
Then cut the top 1 3 to 1 2 of top of the pipe off.
Install the gutter and run your 1 5 downspout with 90 degree or 45 degree depending on your configuration.