corner braces 1..Material:Q235 SS400 S235JR ST37-2 Q345 2.Size:20*20*3mm-200*200*24mm 3.Certificat:ISO,CE ProductionSpecifictionNormal Size1.Channel Bar EN UPN & UPESt37-2,St52-3,S235JR,S355JR“UPE80-UPE400” “UPN30X5-UPN400”GB STANDARDCHANNEL BARQ195,Q215,Q235,Q345“50*37-300*89”JIS CHANNEL BARSS330,SS400,SM490A,SM490B“75*40-380*100”2.Equal Angle Bar EN EQUAL ANGLE BARSt37-2,St52-3,S235JR,S355JR“20 ...