... : 100-650(according your request ) Length: 5-12 I beamDescription: I beam, also called girder, is one kind of profiled ... bars which is strip profiled steel with the "I" shape sections. The specification is usually expressed by middle ... b) * middle width (d), for instance, "I 160*88*6", shows that I beam with 160mm bottom height, 88mm middle width ... ±0.76M/9M/12M220250280300320±3.5±0.8 I beams