Pig Train keeps pipeline from becoming a sty

摘要

Foreign materials that gather within a pipeline can include liquids, dirt, sand, iron oxide, debris from construction and a whole host of other unwanted substances outside of the pipeline's intended cargo. While the immediate effect of this unwanted accumulation is restricted flow and a decrease in the pipeline's efficiency, if left unchecked die problem can fester and cause much more problematic and expensive problems, such as internal corrosion.