H beams (ASTM BS GB JIS) 1.Grade:Q235B,SS400,Q345B,S235JR,S275JR, ... 3.Thickness:10-28m Description: H beams (ASTM BS GB JIS)Size: 100x100mm-900x300mmThickness: 10mm-28mmLength: 5.8m-12mStandard ... : GB/JIS/ASTM/BS Material: Q235B,SS400,ASTM-A36,S235JR ... *250*9*1472.4414*405*18*28233 250*255*14*1482.2440*300*11*18124 294*200*8*1257. ...