... erection 2. Steel common grade: Q235/Q345B 3. Application: warehouse, workshop, hanga steel structure warehouse & workshop Steel structure warehouse is widely used ... kinds of steel structures, steel building, metal building, modular house, steel frame for warehouse, workshop, garage etc, steel beams, ... beam: Material Q345(S355JR)or Q235(S235JR) steel, all bolts connection! Straight cross-section or ...