Plastic drums are produced making use of injection blow moulding engineering and have both a different lid (similar to those on fiber drums) or maybe a welded variety best with the bung holes molded in. Metallic drums are created with chilly-rolled steel sheets, welded by themselves into long pipe-like sections http://plastic-pail63940.ampblogs.com/Examine-This-Report-on-plastic-pail-33266908