steel h beams for sale 1.grade:Q235,Q345,SS400 2.standard:JIS,GB/T11263- ... ,400*200, 446*199, 450*200, 496*199, 500*200mm H BEAMS GradeCHEMICAL COMPOSITION %MECHANIC PROPERTYCSiMnPSBYield Strength (N/mm)Tensile Strength (N ... .490.022~0.0260.021~0.0280.000827541533.5OKRemark H-waist height ; B-leg breadth ; T1-waist thickness ; T2-leg thickness ; steel h beams for sale