ASTM H beam/steel beam /steel structure / steel h -beam Usage: workshop, office, warehouse, large-span building. ASTM H beam/steel beam /steel structure / steel h -beamType: lightGrade: ... and stable structural.3 Light weight, high strong, large span and can improve higher space efficiency.4. It can ... workshop, office, warehouse, single-layered heavy plants, large-span public buildings, multi-storey