After the pipe provided on its inside and outside with a lip has been introduced into {HEAD ~ the pressure conveying element}, the pipe is at its outer lip connected to {TAIL ~ the lip} of the element by a complete through weld 
After the pipe provided on its inside and outside with a lip has been introduced into { HEAD ~ the pressure conveying element } , the pipe is at its outer lip connected to { TAIL ~ the lip } of the element by a complete through weld
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH