... ,Q 345B 3>Standard:GB/T 11263-2005 Hot Rolling H Section Steel ,Steel H-Beam ... 10*16mm350*350*12*19mm350*357*19*19mm388*402*15*15mm390*300*10*16mm400*200*8*13mm400*150* ... 11*17mm600*201*12*20mm700*300*13*24mm708*304*15*28mm792*300*14*22mm800*300*14*26mm900*300* ... 22mmApplication for the :structure,New-Building and ,Bridge H ,T, C, Profile Steel( Beam),Rolled Steel Girder,Section ...