The iron drum can be used for liquid, solid, generally cylindrical, with a bottom, the bottom is closed with iron, and the upper mouth has an iron handle for easy carrying. It appeared early in the ancient Chinese Xia Dynasty. Another type of iron barrel, only a small opening on the bottom, closed at the bottom, generally used for oil transportation, etc., appeared in modern times.
The barrier properties of iron drums to air and other volatile gases are important for the preservation of nutrients and sensory qualities. Comparing various juice packaging containers, the oxygen transmission rate of the container directly affects the browning of the juice and the preservation of vitamin C; the metal cans with low oxygen transmission rate, the glass bottles and the aluminum foil, and the preservation of the vitamin C in the carton. Better, which is better with iron cans.https://www.fhpails.com/