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The Portuguese word for barrel is pipa. A pipe is, in fact, a large, lengthy barrel or cask with tapered ends. It's used for aging and shipping wine and is used extensively for PORT and also for MARSALA and MADEIRA. Pipes range in capacity from 418 to 630 liters (1101?2 to 1661?U.S. gallons). In Portugal's DOURO region where most port is made, the standard pipe measures 550 liters (145 U.S. gallons). In VILA NOVA DE GAIA where much of the port wine is aged, pipes vary in size, although the standard pipe measure is 534 liters (141 U.S. gallons). For madeira wines, the standard is 418 liters (1101?2 U.S. gallons).