In one example, {HEAD ~ each steel pipe} has a 12 inch inside diameter and {TAIL ~ a length} of 40 feet , with the pipes being connected in series 
In one example , { HEAD ~ each steel pipe } has a 12 inch inside diameter and { TAIL ~ a length } of 40 feet , with the pipes being connected in series
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH