Sioux Steel farm bins are the only bins in the industry designed for grains weighing up to 64 lb/bushel! G90 galvanized steel is standard on farm bins. Farm bin roofs feature peak load ratings up to 10,000 lbs. Designed for free flowing grains up to 51 lbs/ft3 (55 lbs/ft3 including compaction). 10 year warranties available on Sioux Steel farm bins! View video on Sioux Steel farm bins.