The extruded aluminum alloy part includes {HEAD ~ a pair} of upper and lower flanges approximately parallel facing each other as seen in a cross section thereof and a pair of {TAIL ~ webs} formed to stand along the vehicle height direction 
The extruded aluminum alloy part includes { HEAD ~ a pair } of upper and lower flanges approximately parallel facing each other as seen in a cross section thereof and a pair of { TAIL ~ webs } formed to stand along the vehicle height direction
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH