h beams for sale steel grade:Q235,Q345,SS400 standard:JIS, ... length6m or 12m5.applicationused for machinery, procesing, structure building, automobile manufacturing, shipbuilding, electric powerhot sale size please check as ... below:100*100, 125*125, 150*75, 150*150, 148*100 ... standard weight ; W2-GB standard weight h beams for sale