TrucksShort review, description. Oztreyler KDR 815 tipper semi-trailer 26.05.2022 /Photo: Oztreyler KDR 815 Oztreyler tipper semi-trailer.Specifications Oztreyler KDR 815:Volume29-32-34 m3Pump35-85 min / l.Pressure280 bar.Lifting angle45 degree.