... G3101-2004 Hot rolled Q235 grade H-beam modelgradeprovide capacity(ton)specified lengthexecutive standardHot rolled H-beam steelQ235 Q345ASS400 SS4901700006m-18mGB/T11263 ... 300,650*300,646*299,606*201,600*200,596*199,594*302,588*300,582*300,550*300544*300,550 ... *200,546*199,500*200,496*199,482*300,488*300,450*200,446*199,440*300400*400,400* ... *100,125*125,100*100 HOT rolled Q235 grade H-beam