Carport drainage connection

Hello,

We had a metal carport built. The roof of the carport drains over the posts. At the bottom, there is a drain. I would like to connect this to the house's roof drainage. For this, I am using [KG-Rohre DN100] underground.

The outlet from the carport is round and has an outer diameter of about 49 mm and an inner diameter of about 42 mm. Which adapter pieces can I use to connect to [DN100]? Unfortunately, I have not found anything suitable.

Attached are a few pictures.

Thank you very much and best regards

That will probably be something along those lines

Thank you for the feedback. The problem is that this is not UV-resistant. Does anyone have an alternative? Thank you very much.

Well, then something like that .. wastewater reducer piece and until then make sure you lay proper pipe from the carport [ATTACH alt="1683437910997.png"]79860[/ATTACH]

What was shown in the previous post is also available as a KG reducer piece

There are also some of the last mentioned variant that you can cut to size. This way, the size should always fit.

Great, thank you very much for the input. That helps me a lot.

Now I still need to find a proper connection to the [KG pipe] (Anthracite). Unfortunately, I can't find any pipes that fit. The outer diameter at the carport is 49 mm. Pipes with nominal size 50 have an inner diameter of 53 mm at the socket. Do you have any tips for me here?