During welding with high output power, {HEAD ~ the gaps} between {TAIL ~ the pieces} being joined may not exceed a maximal gap width 
between
During welding with high output power , { HEAD ~ the gaps } between { TAIL ~ the pieces } being joined may not exceed a maximal gap width
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH