... efficiency 3. Economic cost 4.prompt de Project scope:Industrial steel structure warehouse/workshop/hangar/garage/chicken shed,container house, prefabricated home ... (built-up welded H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof & wall materials, Tempcon ... weight of allocation is generally 29 ton,volumn is 86m3. steel structure Q235/Q345