... meters, 9m, 12m... standard: JIS,EN Steel I-Beam Material: Q195,Q235,Q345,SS400 I-Beam can be used in a variety of building ... structures,the bridge,the support,etc.Steel I-BeamMaterial: Q195,Q235, Q345, SS400I-Beam ... variety of building structures.(2)used for the bridge, vehicle construction.(3)used for the support, machinery and others.Our company ...