If you use a regular wooden pipe or pnuematic tube setup, it should give you the solid items from inside. A waterproof pipe/liquid tube setup will give the oil.Is there anyway possible to export coal coke from a coke oven and not just the oil that is created?
Looks like your wood pipes are wrong. Right-click them with a buildcraft wrench or a crescent hammer until the thicker end of the pipe is touching the coke ovens.