said corrugations being the only protuberances of {HEAD ~ said pipe} between {TAIL ~ said joints}, 
between
said corrugations being the only protuberances of { HEAD ~ said pipe } between { TAIL ~ said joints } ,
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH