... 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 ... .Steel I-BeamMaterial: Q195,Q235, Q345, SS400I-Beam can be used in a variety of building structures, the bridge,the support and so ... 3)used for the support, machinery and others.Our company meets the requirement of ISO9001:2008 and is reqistered with the BM Trade ...