This radius R runs up to the outlet plane of {HEAD ~ the tube} 20, the angle β between {TAIL ~ the start} and end of the curvature being 3 mm 
This radius R runs up to the outlet plane of { HEAD ~ the tube } 20 , the angle β between { TAIL ~ the start } and end of the curvature being 3 mm
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH