K6 Standard Gauge Casting Wagon Bogie – 25t Axle Load, 3 Piece Casting Structure This wagon bogie is a K6 type three-piece casting bogie designed for 1435 mm standard gauge freight wagons. With a 25t axle load rating and a proven 3 piece casting steel frame, it is the mainstream choice for general purpose railway freight wagons. Key Features Classic three-piece casting bogie formed by two cast steel side frames and one bolster, robust and easy to maintain. 25t axle load bogie