steel h beams for sale 1.grade:Q235,Q345,SS400 2.standard:JIS,GB/ ... , details please check below4.length6m or 9 or 12m5.applicationused for machinery, procesing, structure building, automobile manufacturing, shipbuilding, electric powerhot sale ... ,400*200, 446*199, 450*200, 496*199, 500*200mm H BEAMS GradeCHEMICAL COMPOSITION %MECHANIC PROPERTYCSiMnPSBYield Strength (N/mm)Tensile Strength (N ...