A drum is a cylindrical container used for shipping bulkcargo. Drums can be made of steel, dense paperboard (commonly called a
fiber drum), or plastics, and are generally used for the transportation and storageof liquids and powders. Drums are often
certified for shipment of dangerous goods. Shipped goods must be matched withthe make of drum necessary to comply with applicable
regulations. Drums are also called barrels in common usage.
International standard size
Steel drums used as shipping containers for chemicals and other liquids.
A 200-litre drum (known as a 55-gallon drum in the United States and a44-gallon drum in the United Kingdom[dubious â€“ discuss]) is
a cylindrical container with a nominal capacity of 200 litres (55 US or 44 impgal). The exact capacity varies by manufacturer,
purpose, or other factors. Standard drums have inside dimensions of 572millimetres (22.5 in) diameter and 851 millimetres (33.5
in) height. These dimensions yield a volume of about 218.7 litres (57.8 US gal;48.1 imp gal), but they are commonly filled to
about 200 litres.
The outside dimensions of a 200-litre drum are typically 584 millimetres (23in) diameter at the top or bottom rim, 597
millimetres (23.5 in) diameter at the chines (ridges around drum), and 876millimetres (34.5 in) height. Exact dimensions are
specified in ANSI MH2.
The drums are typically made of steel with a ribbed outer wall to improverigidity and for rolling. The lids can be welded or
secured with a head gasket and bolt ring. Drums can also be made of durableplastic or paperboard. They are commonly used for
transporting oils, fuels, chemicals, and dry goods. The construction andperformance of drums used for shipment of hazardous
materials are governed by UN, country, and carrier regulations.
used forsafe shipping and storing of bulk chemicals, among otherhazardous substances.