Philippi-Hagenbuch has been a major part of the aggregates and construction industries since our founding in 1969, by helping our clients do more with their off-highway haul trucks. Our innovations include the Autogate® Tailgate, Sideboards, Rear Eject Bodies & Trailers, Water Tanks, Custom Truck Bodies, and Trailers, Load Ejectors, Push Blocks, Material Spreader & Stemming Attachments.