More specifically, the tube section 20 has at each of its ends a flange 20a which can be tightly fixed to the flanges 12a and 10a by {HEAD ~ any appropriate fixing means}, such as {TAIL ~ not shown bolts} 
such as
More specifically , the tube section 20 has at each of its ends a flange 20a which can be tightly fixed to the flanges 12a and 10a by { HEAD ~ any appropriate fixing means } , such as { TAIL ~ not shown bolts }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL