an apparatus for producing thermoplastic corrugated pipes may include an extrusion device with an extruder and an extrusion die device and a corrugator device with traveling mold jaws . the extrusion device and the corrugator device are positionally movable in relation to one another , for example for adjustment . the extrusion device is positionally movable in relation to the corrugator device in a horizontal plane , while the corrugator device is movable exclusively in height here .