I tried to craft kinesis pipe, as describen in this resource, but this happend:

Thanks for the report! Kinesis Pipes recipes were missing as the mod is still in alpha, they have been readded in 7.99.6 so please update to that version to access them :)

Where i can download 7.99.6? 7.99.5 on official site...

https://www.mod-buildcraft.com/buildcraft-7995-alpha.html it says 7.99.5 but the download link is for 7.99.6

Im feeling really stupid, but i cant find download button there...

Ah, that hasn't been updated yet. here is a direct link: https://www.mod-buildcraft.com/releases/BuildCraft/7.99.6/buildcraft-7.99.6.jar

Thanks

No problem, hopefully we can get the downloads page updated soon :)