... usage:structural ISO9001:2008 ASTM E-84-95 1)Name:i beam.2)Usage:structural3)Size as following: namemodel numbersize(mm ... )weight(kg/m)I beamI2525x15x6.40.4I3838x15x6.40.6I100100x60x6.52.45I150150x80x84.7I250250x152x129.6I300300x150x1516.5We ... , LIGHT WEIGHTH, EASY TO INSTALLI, EASY TO MAINTAINJ,IMPACT RESISTANT I beam