size: 20mm-200mm length:6m,9m,12m material:Q195,Q235,Q345,Q420,Q460,ss400,A36.... stable in performance,good surface Equal angle steel:1.size: 20mm-200mm2.length: 6m,9m,12m3.mterial:Q195,Q235,Q345,Q420,Q460,SS400,A36,ST37-2,S235JR unequal angle steel