... : workshop, office, warehouse, large-span building. ASTM H beam/steel beam /steel structure / steel h -beamType: lightGrade: Q345, Q235Standard: ASTM1) Easy to ... roll H-style steel or welded H-style.2. Fast construction, easy installation, time saving, labor-saving and stable structural.3 Light weight ... , office, warehouse, single-layered heavy plants, large-span public buildings, multi-storey