I Beam
Material:
Q195,Q235,Q235B,Q345,SS400,S235JR,S275JR,S355JR ,304,Q215,201,10#,
q235,202,316L,5CrMnMo,Q235AB,Q235A,WLZN ,20# ,SS400 and so on
CHINA STANDARD:10#-40C;IPE80-IPE240;IPEAA100-160