you may have heard someone call plastic drums “poly drums” before, which is just a slightly more specific way of referring to them. The type of plastic used in these containers is called high density polyethylene (HDPE). Blue plastic drums have found a vital place in many industries, in both transport and storage capacities. They are easy to fill and empty, can be moved around and stacked in warehouses, and safely sealed and used for transport. Plastic drums are generally UN certified and of food-grade quality.