6X4 means 6 wheel ends and 4 positions distribute power (power divider installed) 6X2 means 6 wheel ends and 2 positions distribute power (single axle drive) 4X0 means 4 wheel ends no power (trailer axle) Now the 6 wheel ends can either be wide base singles or duals. They are just talking about the outside wheels.
Dump trailers are a type of specialized semi-trailer designed to haul debris, building materials, logs, boulders, rough matter, and other payloads that can be hauled and then dumped en masse. There are a wide range of dump trailer types and they come in a variety of sizes, making them a versatile option for construction, energy, and other industrial applications.
EU 4-axle with 2 steering axles A standard dump truck is a truck chassis with a dump body mounted to the frame. The bed is raised by a vertical hydraulic ram mounted under the front of the body, or a horizontal hydraulic ram and lever arrangement between the frame rails, and the back of the bed is hinged at the back of the truck.