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