... ,Q345,SS400 2.standard:JIS,GB/T11263-1998 3.size:100*100-900*300mm high quality H shape structural ... 20052.steel gradeQ235, Q345, SS4003.size100*100-900*300mm, details please check below4.length6m or 12m5.applicationused for machinery, ... procesing, structure building, automobile manufacturing, shipbuilding, electric powerSize details please check below:100*100 , 125*125, 150*75, 150 ...