H beams (ASTM BS GB JIS) 1.Grade:Q235B,SS400,Q345B,S235JR,S275JR,ASTM- ... :100x100mm-900x300mm 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 SizeTheoreticalweight (kg/m)sizeTheoretical ...