{HEAD ~ The body portion} defines {TAIL ~ a longitudinal axis} and includes an outer surface carrying a wrapping for reinforcing the pipeline 
{ HEAD ~ The body portion } defines { TAIL ~ a longitudinal axis } and includes an outer surface carrying a wrapping for reinforcing the pipeline
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH