The method 13, wherein {HEAD ~ one or more grip bands} comprising {TAIL ~ the relatively hard elements} are disposed on the outer face of the expandable tubing 
The method 13 , wherein { HEAD ~ one or more grip bands } comprising { TAIL ~ the relatively hard elements } are disposed on the outer face of the expandable tubing
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH