1:Welded H Beams 2:Standard:GB/T,ASTM. 3;Grade:Q235B/Q345B 4:Sizes:340*250* ... construction and industry,workpiece and so on.2:Standard:GB/T.Grade:Q235B Q345B.3:stocks coming from Rizhao,Laigang, ... 9*14mm=weight.79.7kg/M.450*150*9*14mm=weight 65.5kg/M.In general,the H Beams' length of every ... hm HN H these four kinds,these are according the proportion of width and high to classify. Welded GB/T H Beams