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: ... . Main frame is made of hot roll H-style steel or welded H-style.2. Fast construction, easy installation ... circularly.6.Usage: workshop, office, warehouse, single-layered heavy plants, large-span public buildings, multi-storey