1.size from 100mm to 900mm 2.Standard : GB,JIS,EN,ASTM 3.Material: Q235,Q345, SS400, ASTM A36,S235JR,SS540 steel I beams,Certificates:ISO 14001,ISO9001 Specification:from IPEAA 100-160 Length:5.8m-12m Grade :Q195-Q345 I BEAMS(CHINESE STANDARD)MATERIAL:Q235/SS400/ST37-2 and Q345/ST52ItemSize /mmTheoretical Weighthbdkg/m10100684.511.2611212074513.98714140805.516.891616088620.51318180946.524. ...