... , equivalent to S235JR Size:Various, pls find our size list below Length:6 meters, 9m, 12m... standard: JIS,ENstainless ... steel i-beamI-beam specification: Material: Q235,Q235B,Q345, 10#---50#a Standard: GB/T11263-2005,JISG31301 Size ... MadamGood days!Regarding I beam, it's professional to us. The specification as follow:1.Size: ... 4 to 500*160*142.Grade:Q235,Q235B, Q345,10#-50#3. Length: 6 m-12m4. Standard: ...