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 height (h) *bottom width (b) * middle width (d), for instance, "I 160*88*6", shows that I beam with 160mm bottom height, 88mm middle width, 6mm middle width.
beam, also called girder, is one kind of profiled bars which is strip profiled steel with the "I" shape sections.