... workshops, large factories, and so on. Description: 1, Light weight steel structure 2,Higher reliability of steel work 3,Steel ... ,Recyclable steel11,Steel shorter durationMaterials: Main Grade: Q345B,Q235B Carbon structural steel: Q195, Q215, Q235, Q255, Q275, ... alloy structural steel.Quality carbon structural steel and alloy structural steel.Special purpose steel.The main frame (columns and beams ...