Four-axle bogie flat wagon with fixed strengthened stanchions and fixed end-walls. The wagon is specified for transportation of roundwood of 3m length and more up to loading length of wagon. The wagon can also be used for transportation of wooden poles and steel pipes. Wagon body is compound of two fixed end-walls and 10 pairs of stanchions of 2100mm height linked with floor sleeper, that enable to use all commonly used mechanical devices for loading and unloading. The end-walls are fixed connected with the first pair of stanchions. The wagon floor is made from sheet for walking.