They are probably needed to to TE3s intended incompatibility with BC pipes.
What I don't understand though is why have all these pipes and stuff on the quarry end at all? Tesseract for power(and a few conduits now ofc), Enderchest for items and that is all on the Quarry side. Much easier to move the quarry that way. Then all the other handling is dealt with back home at base.
Because itemsorting without reducing throughput.
I tried having the diamond/void pipe filtering out waste after teleporting everything back to my base but BC pipes removing from an inventory is a hell of a lot slower than a properly powered quarry outputs stuff.
That and I'm too lazy to work out how I should go about filtering cobble and dirt using itemducts XD