corner braces 1..Material:Q235 SS400 S235JR ST37-2 Q345 2. ... 3mm-200*200*24mm 3.Certificat:ISO,CE ProductionSpecifictionNormal Size1.Channel Bar EN UPN & UPESt37-2,St52-3,S235JR, ... BARQ195,Q215,Q235,Q345“50*37-300*89”JIS CHANNEL BARSS330,SS400,SM490A,SM490B“75*40-380*100”2 ... -550X170’JIS I-BEAMSS330,SS400,SM490A,SM490B“100X75-600X190’1.Flat Steel BarCarbon Structural Steel,Alloy Structural Steel ,Spring ...