Hi there !
I post here because I don't know how to make a pull request ^^
(Not the first time it handicaps me but I'm always confused by github..)

Anyway, I saw the translation request : I made some already and thought it was fun to do, so I take the opportunity ! ^^

Here would be my french lines : (Small lines, but I still triple checked so it should be misstake free ^^)

[mod-setting-name]
app_assembling_machines=Ajouter des tuyaux supplémentaires aux Machines d'Assemblage?
app_oil_refineries=Ajouter des tuyaux supplémentaires aux Raffineries?
app_chemical_plants=Ajouter des tuyaux supplémentaires aux Usines de Produits Chimiques?

[mod-setting-description]
app_assembling_machines=Ajoutera des tuyaux supplémentaires aux Machines d'Assemblage.
app_oil_refineries=Ajoutera des tuyaux supplémentaires aux Raffineries.
app_chemical_plants=Ajoutera des tuyaux supplémentaires aux Usines de Produits Chimiques.

Thankyou so much for the translation.

It will be included in the next release.

My pleasur ! Thanks for your work =)

I had to edit an entity name, saw in-game that I didn't have the right entity name ; Wiki wasn't precisely exact !

Took the opportunity to quadruple check the spelling x) No misstake I see !

Released; please let me know if there are any issues.

Everything seems fine =) Glad it's useful !
Five time I read myself now, if I let a mistake slip by now I'll never get over it ^^