The Bonded DFF system has been developed for plain line and turnout applications to directly combat corrugation and vibration problems caused by major dynamic forces generated from passing trains.
The DFF system is suitable for use on slab tracks, concrete ties, steel bridges, ballasted tracks and turnouts. The fastening system has two system variations available; a standard model for plain line tracks and customized models for turnout applications. The DFF system can be constructed by either the top-down method or bottom-up construction and is adaptable to all types of slab.