I beam (I beam steel,steel bar) Steel grade:Q195-235; Q235B Standard:GB/T 700-1988 Size: Height 80-360mm, 6/9/12m i beam( i beam steel, steel bar) Steel grade: Q195-235; Q235B. Standard: GB/T 700-1988. Size: Height 80-360mm. Details in table please check our website. Length: 100-180mm height, 6mtrs. 200-360mm height, 6/9/12mtrs. Packing: in bundles. Others: As well as Chinese standard size, we ...