... I beam 2. YB/T 5047-2000,EN,DIN standard 3.Length: 6-12 meters 4.suit bridge,vehicle,brackets,machine ... SIZEMATERIALSTANDARDLENGTH8#~45#Q235BQ345BGB706-886-12 MI-beam steel is hot rolled ... As a China profile steel manufacturer, we can produce I-beam steel of various specifications as per customers' requirements.Standard: ...