Hello, installed mods:
Bob´s complete
Angel´s complete
Pyanodon´s complete
AAI complete
MadClown´s complete
And some others

iron pipe recipe made by hand is missing, cant make science pack 1 with out that recipe.
Is this mod causing the problem or is it another?

ive got bobs, angels, and pymods complete sets and iron pipe show up under bobs logistics like it should. so its got to something else conflicting to remove that recipe.

if you could provide a save file or a complete mod list on the pycoaltbaa forum page i can look into it and should be able to fix it asap

I have found the problem, it is the AAI industry mod, it has the basic fluid handling technology that unlocks the iron pipe but it is impossible to do since without the iron pipe you cant do science pack 1 in Pyanodon´s mods.

ok. there is a science pack 0 mod for aaii and pycoal that should fix it.
https://mods.factorio.com/mod/aai-industry-sp0. i recommend trying that if you haven't already. if its still an issue feel free to contact me and ill fix it

Works perfect, thanks.